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Civil defense siren

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A civil defense siren (also known as an air-raid siren or tornado siren) is a siren used to provide emergency population warning of approaching danger and sometimes to indicate when the danger has passed. [1]

171 relations: Acqua alta, Air horn, Airstrike, Alaska, Alberta, Alert Ready, Amplifier, ATI HPSS, Ö2, Bagshot, Barcelona City History Museum, Blackout (wartime), Bombing of Barcelona, Bombing of Guernica, Boston, Lincolnshire, Bracknell, Broadmoor Hospital, Broadmoor Sirens, California, Camberley, Canvey Island, Carbon River, Chemical plant, Chrysler Air-raid Siren, Chrysler Hemi engine, Code for America, Cold War, Common Alerting Protocol, Compressed air, Compression driver, Compressor, Country Fire Authority, Crowdsourcing, Darlington Nuclear Generating Station, Daytona Beach, Florida, Düsseldorf, Decibel, Denver, Diaphone, Diesel engine, Dresden, Dual-tone multi-frequency signaling, East Coast of the United States, Email, Emergency Alert System, Emergency population warning, Environment Agency, Exercise Tocsin, Fan (machine), Federal Signal 3T22, ..., Federal Signal Corporation, Federal Signal Modulator, Fire alarm system, Fire hydrant, Floodline, Florida, Gainsborough, Lincolnshire, Gaza Strip, Guernsey, Gulf Coast of the United States, Hamburg, Hawaii, Hebden Bridge, Home Office, Honolulu, Horn loudspeaker, Horncastle, Lincolnshire, Indo-Pakistani War of 1965, Indo-Pakistani War of 1971, Isle of Portland, Just intonation, Lahar, Leeds, Lincolnshire County Council, Long Range Acoustic Device, Los Angeles, Louth, Lincolnshire, Luftwaffe, Mablethorpe, Maine, Middle Rasen, Minnesota, Minor third, Mother Jones (magazine), Mount Rainier, Mumbai, Mytholmroyd, Nanjing, Nanking Massacre, New Hampshire, New York (state), Newark, New Jersey, NOAA Weather Radio, Norfolk County Council, North Somercotes, Nuclear power, Nuclear power plant, Oil refinery, Oklahoma, Ontario, Oregon, ORF 2, Palestinian rocket attacks on Israel, People's Liberation Army, Pickering Nuclear Generating Station, Pierce County, Washington, Pitch (music), Pneumatics, Protezione Civile, Public switched telephone network, Public Warning System (Singapore), Puyallup, Washington, Pye Ltd., Quebec Nordiques, Radio Télévision Suisse, Radio Val 202, Radioactive contamination, Radiotelevisione svizzera, Radiotelevisiun Svizra Rumantscha, Red Color, Romania, Romania in World War II, Rotary woofer, Royal Observer Corps, Sandhurst, Berkshire, Sarnia, Saskatchewan, Schaltbau Group, Schweizer Radio und Fernsehen, Signal generator, Singapore, Siren (alarm), Skegness, Slovenia, SMS, South Australian Country Fire Service, Soviet Union, Spalding, Lincolnshire, Spanish Civil War, Stator, Storm surge, Sutton Bridge, Texas, The Blues Brothers (film), Todmorden, Tornado, Tornado warning, Toronto, Tritone, Tropical cyclone, Tsunami, Turbine, Twitter, Types of volcanic eruptions, Upper Calder Valley, Valencia, Variable-message sign, Venice, Virginia Tech shooting, W.S. Darley & Co., Walcott, Norfolk, Walsden, Washington (state), Weapon of mass destruction, Westminster Quarters, Wisconsin, Wokingham, Wykebeck, Yom HaShoah, Yom Hazikaron, 2007 United Kingdom floods. Expand index (121 more) »

Acqua alta

Acqua alta (Italian for "high water") is the term used in Veneto for the exceptional tide peaks that occur periodically in the northern Adriatic Sea.

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Air horn

An air horn is a pneumatic device designed to create an extremely loud noise for signaling purposes.

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Airstrike

An airstrike or air strike is an offensive operation carried out by attack aircraft.

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Alaska

Alaska (Alax̂sxax̂) is a U.S. state located in the northwest extremity of North America.

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Alberta

Alberta is a western province of Canada.

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Alert Ready

The National Public Alerting System (Système national d'alertes à la population), branded as Alert Ready, is the national warning system in Canada.

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Amplifier

An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the power of a signal (a time-varying voltage or current).

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ATI HPSS

The ATI Soundblaster HPSS (high-power speaker station) is an electronic outdoor warning system manufactured by Acoustic Technology, Inc (ATI) that is used to alert the surrounding populace of tornadoes, hurricanes, severe thunderstorms, fires and so on.

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Ö2

Österreich 2 (Ö2; previously known as Österreich-Regional, ÖR) is the overall term used to refer the network of nine regional radio services provided by Austria's national public service broadcasting organization ORF.

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Bagshot

Bagshot is a large village in the southeast of England.

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Barcelona City History Museum

The Barcelona City History Museum (Catalan: Museu d'Història de Barcelona, Spanish: Museo de Historia de Barcelona, acronym MUHBA) is a city museum that conserves, researches, communicates and exhibits the historical heritage of the city of Barcelona, from its origins in Roman times until the present day; it is funded by the Barcelona municipality.

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Blackout (wartime)

A blackout during war, or in preparation for an expected war, is the practice of collectively minimizing outdoor light, including upwardly directed (or reflected) light.

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Bombing of Barcelona

The Bombing of Barcelona was a series of Nationalist airstrikes which took place from 16 to 18 March 1938, during the Spanish Civil War.

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Bombing of Guernica

The bombing of Guernica (26 April 1937) was an aerial bombing of the Basque town of Guernica during the Spanish Civil War.

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Boston, Lincolnshire

Boston is a town and small port in Lincolnshire, on the east coast of England, approximately 100 miles (160 km) north of London.

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Bracknell

Bracknell is a town and civil parish in Berkshire, England, the westernmost area within the Greater London Urban Area and the administrative centre of the Borough of Bracknell Forest.

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Broadmoor Hospital

Broadmoor Hospital is a high-security psychiatric hospital at Crowthorne in Berkshire, England.

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Broadmoor Sirens

The Broadmoor Sirens are a series of thirteen warning sirens based in towns and villages surrounding Broadmoor Hospital in Crowthorne, Berkshire, England.

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California

California is a state in the Pacific Region of the United States.

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Camberley

Camberley is a town in Surrey, England, southwest of Central London, between the M3 and M4 motorways.

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Canvey Island

Canvey Island is a civil parish and reclaimed island in the Thames estuary in Essex, England.

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Carbon River

The Carbon River is a river in the U.S. state of Washington.

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Chemical plant

A chemical plant is an industrial process plant that manufactures (or otherwise processes) chemicals, usually on a large scale.

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Chrysler Air-raid Siren

The Chrysler Air Raid Siren (second generation), or known as the Chrysler Bell Victory Siren (first generation) was an outdoor warning siren produced during the Cold War era that had an output of 138 dBC at.

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Chrysler Hemi engine

The Chrysler Hemi engines, known by the trademark Hemi, are a series of I6 and V8 gasoline engines built by Chrysler with hemispherical combustion chambers.

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Code for America

Code for America is a non-partisan, non-political 501(c)(3) organization founded in 2009 to address the widening gap between the public and private sectors in their effective use of technology and design.

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Cold War

The Cold War was a state of geopolitical tension after World War II between powers in the Eastern Bloc (the Soviet Union and its satellite states) and powers in the Western Bloc (the United States, its NATO allies and others).

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Common Alerting Protocol

The Common Alerting Protocol (CAP) is an XML-based data format for exchanging public warnings and emergencies between alerting technologies.

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Compressed air

Compressed air is air kept under a pressure that is greater than atmospheric pressure.

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Compression driver

A compression driver is a small specialized diaphragm loudspeaker which generates the sound in a horn loudspeaker.

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Compressor

A compressor is a mechanical device that increases the pressure of a gas by reducing its volume.

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Country Fire Authority

Country Fire Authority, or CFA, is a fire service in Victoria, Australia, with other fire services being Department of Environment, Land, Water and Planning (DELWP) and the Metropolitan Fire Brigade (MFB).

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Crowdsourcing

Crowdsourcing is a sourcing model in which individuals or organizations obtain goods and services.

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Darlington Nuclear Generating Station

Darlington Nuclear Generating Station is a Canadian nuclear power station located on the north shore of Lake Ontario in Clarington, Ontario.

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Daytona Beach, Florida

Daytona Beach is a city in Volusia County, Florida, United States.

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Düsseldorf

Düsseldorf (Low Franconian, Ripuarian: Düsseldörp), often Dusseldorf in English sources, is the capital city of the German state of North Rhine-Westphalia and the seventh most populous city in Germany. Düsseldorf is an international business and financial centre, renowned for its fashion and trade fairs.

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Decibel

The decibel (symbol: dB) is a unit of measurement used to express the ratio of one value of a physical property to another on a logarithmic scale.

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Denver

Denver, officially the City and County of Denver, is the capital and most populous municipality of the U.S. state of Colorado.

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Diaphone

The diaphone is a noisemaking device best known for its use as a foghorn: It can produce deep, powerful tones, able to carry a long distance.

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Diesel engine

The diesel engine (also known as a compression-ignition or CI engine), named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel which is injected into the combustion chamber is caused by the elevated temperature of the air in the cylinder due to mechanical compression (adiabatic compression).

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Dresden

Dresden (Upper and Lower Sorbian: Drježdźany, Drážďany, Drezno) is the capital city and, after Leipzig, the second-largest city of the Free State of Saxony in Germany.

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Dual-tone multi-frequency signaling

Dual-tone multi-frequency signaling (DTMF) is an in-band telecommunication signaling system using the voice-frequency band over telephone lines between telephone equipment and other communications devices and switching centers.

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East Coast of the United States

The East Coast of the United States is the coastline along which the Eastern United States meets the North Atlantic Ocean.

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Email

Electronic mail (email or e-mail) is a method of exchanging messages ("mail") between people using electronic devices.

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Emergency Alert System

The Emergency Alert System (EAS) is a national warning system in the United States put into place on January 1, 1997 (approved by Federal Communications Commission (FCC) in November 1994), when it replaced the Emergency Broadcast System (EBS), which in turn replaced the CONELRAD System.

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Emergency population warning

An emergency population warning is a method whereby local, regional, or national authorities can contact members of the public en masse to warn them of an impending emergency.

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Environment Agency

The Environment Agency (EA) is a non-departmental public body, established in 1995 and sponsored by the United Kingdom government's Department for Environment, Food and Rural Affairs (DEFRA), with responsibilities relating to the protection and enhancement of the environment in England (and until 2013 also Wales).

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Exercise Tocsin

Exercise Tocsin was an emergency preparedness drill held by the Government of Canada on November 13, 1961 that simulated a nuclear attack by the USSR on Canada.

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Fan (machine)

A mechanical fan is a powered machine used to create flow within a fluid, typically a gas such as air.

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Federal Signal 3T22

The Federal Signal 3T22 was an outdoor warning siren made by Federal Signal Corporation (formerly Federal Sign and Signal Corporation) from 1952 through the early 1990s.

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Federal Signal Corporation

Federal Signal Corporation is a global corporation with about 2,800 employees located in Oak Brook, Illinois.

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Federal Signal Modulator

Modulator Speaker Arrays are electronic warning devices produced by Federal Signal Corporation that are used to alert the public about tornadoes, severe weather, earthquakes, fires, lahars or any other disaster.

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Fire alarm system

A fire alarm system has a number of devices working together to detect and warn people through visual and audio appliances when smoke, fire, carbon monoxide or other emergencies are present.

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Fire hydrant

A fire hydrant, also called a fireplug, fire pump, johnny pump, or simply pump, is a connection point by which firefighters can tap into a water supply.

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Floodline

Floodline is the flood warning system used in the United Kingdom to issue flood alerts and warnings to the public, emergency organisations and businesses.

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Florida

Florida (Spanish for "land of flowers") is the southernmost contiguous state in the United States.

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Gainsborough, Lincolnshire

Gainsborough is a town in the West Lindsey district of Lincolnshire, England.

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Gaza Strip

The Gaza Strip (The New Oxford Dictionary of English (1998) – p.761 "Gaza Strip /'gɑːzə/ a strip of territory under the control of the Palestinian National Authority and Hamas, on the SE Mediterranean coast including the town of Gaza...". قطاع غزة), or simply Gaza, is a self-governing Palestinian territory on the eastern coast of the Mediterranean Sea, that borders Egypt on the southwest for and Israel on the east and north along a border.

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Guernsey

Guernsey is an island in the English Channel off the coast of Normandy.

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Gulf Coast of the United States

The Gulf Coast of the United States is the coastline along which the Southern United States meets the Gulf of Mexico.

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Hamburg

Hamburg (locally), Hamborg, officially the Free and Hanseatic City of Hamburg (Freie und Hansestadt Hamburg, Friee un Hansestadt Hamborg),Constitution of Hamburg), is the second-largest city of Germany as well as one of the country's 16 constituent states, with a population of roughly 1.8 million people. The city lies at the core of the Hamburg Metropolitan Region which spreads across four German federal states and is home to more than five million people. The official name reflects Hamburg's history as a member of the medieval Hanseatic League, a free imperial city of the Holy Roman Empire, a city-state and one of the 16 states of Germany. Before the 1871 Unification of Germany, it was a fully sovereign state. Prior to the constitutional changes in 1919 it formed a civic republic headed constitutionally by a class of hereditary grand burghers or Hanseaten. The city has repeatedly been beset by disasters such as the Great Fire of Hamburg, exceptional coastal flooding and military conflicts including World War II bombing raids. Historians remark that the city has managed to recover and emerge wealthier after each catastrophe. Situated on the river Elbe, Hamburg is home to Europe's second-largest port and a broad corporate base. In media, the major regional broadcasting firm NDR, the printing and publishing firm italic and the newspapers italic and italic are based in the city. Hamburg remains an important financial center, the seat of Germany's oldest stock exchange and the world's oldest merchant bank, Berenberg Bank. Media, commercial, logistical, and industrial firms with significant locations in the city include multinationals Airbus, italic, italic, italic, and Unilever. The city is a forum for and has specialists in world economics and international law with such consular and diplomatic missions as the International Tribunal for the Law of the Sea, the EU-LAC Foundation, and the UNESCO Institute for Lifelong Learning. In recent years, the city has played host to multipartite international political conferences and summits such as Europe and China and the G20. Former German Chancellor italic, who governed Germany for eight years, and Angela Merkel, German chancellor since 2005, come from Hamburg. The city is a major international and domestic tourist destination. It ranked 18th in the world for livability in 2016. The Speicherstadt and Kontorhausviertel were declared World Heritage Sites by UNESCO in 2015. Hamburg is a major European science, research, and education hub, with several universities and institutions. Among its most notable cultural venues are the italic and italic concert halls. It gave birth to movements like Hamburger Schule and paved the way for bands including The Beatles. Hamburg is also known for several theatres and a variety of musical shows. St. Pauli's italic is among the best-known European entertainment districts.

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Hawaii

Hawaii (Hawaii) is the 50th and most recent state to have joined the United States, having received statehood on August 21, 1959.

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Hebden Bridge

Hebden Bridge is a market town which forms part of Hebden Royd in West Yorkshire, England.

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Home Office

The Home Office (HO) is a ministerial department of Her Majesty's Government of the United Kingdom, responsible for immigration, security and law and order.

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Honolulu

Honolulu is the capital and largest city of the U.S. state of Hawaiokinai.

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Horn loudspeaker

A horn loudspeaker is a loudspeaker or loudspeaker element which uses an acoustic horn to increase the overall efficiency of the driving element(s).

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Horncastle, Lincolnshire

Horncastle is a market town in Lincolnshire, England, east of the county town of Lincoln.

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Indo-Pakistani War of 1965

The Indo-Pakistani War of 1965 was a culmination of skirmishes that took place between April 1965 and September 1965 between Pakistan and India. The conflict began following Pakistan's Operation Gibraltar, which was designed to infiltrate forces into Jammu and Kashmir to precipitate an insurgency against Indian rule. India retaliated by launching a full-scale military attack on West Pakistan. The seventeen-day war caused thousands of casualties on both sides and witnessed the largest engagement of armored vehicles and the largest tank battle since World War II. Hostilities between the two countries ended after a United Nations-mandated ceasefire was declared following diplomatic intervention by the Soviet Union and the United States, and the subsequent issuance of the Tashkent Declaration. Much of the war was fought by the countries' land forces in Kashmir and along the border between India and Pakistan. This war saw the largest amassing of troops in Kashmir since the Partition of British India in 1947, a number that was overshadowed only during the 2001–2002 military standoff between India and Pakistan. Most of the battles were fought by opposing infantry and armoured units, with substantial backing from air forces, and naval operations. Many details of this war, like those of other Indo-Pakistani Wars, remain unclear. India had the upper hand over Pakistan when the ceasefire was declared. "Satisfied that it had secured a strategic and psychological victory over Pakistan by frustrating its attempt to seize Kashmir by force, when the UN resolution was passed, India accepted its terms... with Pakistan's stocks of ammunition and other essential supplies all but exhausted, and with the military balance tipping steadily in India's favour." "Losses were relatively heavy—on the Pakistani side, twenty aircraft, 200 tanks, and 3,800 troops. Pakistan's army had been able to withstand Indian pressure, but a continuation of the fighting would only have led to further losses and ultimate defeat for Pakistan." Quote: The invading Indian forces outfought their Pakistani counterparts and halted their attack on the outskirts of Lahore, Pakistan's second-largest city. By the time the United Nations intervened on 22 September, Pakistan had suffered a clear defeat. Although the two countries fought to a standoff, the conflict is seen as a strategic and political defeat for Pakistan, "... the war itself was a disaster for Pakistan, from the first failed attempts by Pakistani troops to precipitate an insurgency in Kashmir to the appearance of Indian artillery within range of Lahore International Airport." – U.S. Department of State, – Interview with Steve Coll in United States House of Representatives 12 September 1994South Asia in World Politics By Devin T. Hagerty, 2005 Rowman & Littlefield,, p. 26 as it had neither succeeded in fomenting insurrection in Kashmir "... after some initial success, the momentum behind Pakistan's thrust into Kashmir slowed, and the state's inhabitants rejected exhortations from the Pakistani insurgents to join them in taking up arms against their Indian "oppressors." Pakistan's inability to muster support from the local Kashmiri population proved a disaster, both militarily and politically." nor had it been able to gain meaningful support at an international level. "Mao had decided that China would intervene under two conditions—that India attacked East Pakistan, and that Pakistan requested Chinese intervention. In the end, neither of them obtained." Internationally, the war was viewed in the context of the greater Cold War, and resulted in a significant geopolitical shift in the subcontinent. Before the war, the United States and the United Kingdom had been major material allies of both India and Pakistan, as their primary suppliers of military hardware and foreign developmental aid. During and after the conflict, both India and Pakistan felt betrayed by the perceived lack of support by the western powers for their respective positions; those feelings of betrayal were increased with the imposition of an American and British embargo on military aid to the opposing sides. As a consequence, India and Pakistan openly developed closer relationships with the Soviet Union and China, respectively. The perceived negative stance of the western powers during the conflict, and during the 1971 war, has continued to affect relations between the West and the subcontinent. In spite of improved relations with the U.S. and Britain since the end of the Cold War, the conflict generated a deep distrust of both countries within the subcontinent which to an extent lingers to this day."In retrospect, it is clear that the Indo-Pakistani War of 1965 represented a watershed in the West's association with the subcontinent.""By extending the Cold War into South Asia, however, the United States did succeed in disturbing the subcontinent's established politico-military equilibrium, undermining British influence in the region, embittering relations between India and Pakistan and, ironically, facilitating the expansion of communist influence in the developing world." "The legacy of the Johnson arms cut-off remains alive today. Indians simply do not believe that America will be there when India needs military help... the legacy of the U.S. "betrayal" still haunts U.S.-Pakistan relations today.".

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Indo-Pakistani War of 1971

The Indo-Pakistani War of 1971 was a military confrontation between India and Pakistan that occurred during the liberation war in East Pakistan from 3 December 1971 to the fall of Dacca (Dhaka) on 16 December 1971.

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Isle of Portland

The Isle of Portland is a limestone tied island, long by wide, in the English Channel.

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Just intonation

In music, just intonation (sometimes abbreviated as JI) or pure intonation is any musical tuning in which the frequencies of notes are related by ratios of small whole numbers.

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Lahar

A lahar (from wlahar) is a violent type of mudflow or debris flow composed of a slurry of pyroclastic material, rocky debris and water.

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Leeds

Leeds is a city in the metropolitan borough of Leeds, in the county of West Yorkshire, England.

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Lincolnshire County Council

Lincolnshire County Council is the county council that governs the non-metropolitan county of Lincolnshire in England.

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Long Range Acoustic Device

The Long Range Acoustic Device (LRAD) is an acoustic hailing device developed by LRAD Corporation to send messages and warning tones over longer distances or at higher volume than normal loudspeakers.

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Los Angeles

Los Angeles (Spanish for "The Angels";; officially: the City of Los Angeles; colloquially: by its initials L.A.) is the second-most populous city in the United States, after New York City.

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Louth, Lincolnshire

Louth is a market town and civil parish in the East Lindsey district of Lincolnshire, England.

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Luftwaffe

The Luftwaffe was the aerial warfare branch of the combined German Wehrmacht military forces during World War II.

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Mablethorpe

Mablethorpe is a small seaside town on a sandy shore in the East Lindsey district of Lincolnshire, England.

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Maine

Maine is a U.S. state in the New England region of the northeastern United States.

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Middle Rasen

Middle Rasen is a village and civil parish in the West Lindsey district of Lincolnshire, England, located about west from the town of Market Rasen.

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Minnesota

Minnesota is a state in the Upper Midwest and northern regions of the United States.

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Minor third

In the music theory of Western culture, a minor third is a musical interval that encompasses three half steps, or semitones.

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Mother Jones (magazine)

Mother Jones (abbreviated MoJo) is a progressive American magazine that focuses on news, commentary, and investigative reporting on topics including politics, the environment, human rights, and culture.

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Mount Rainier

Mount Rainier (pronounced) is the highest mountain of the Cascade Range of the Pacific Northwest, and the highest mountain in the U.S. state of Washington.

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Mumbai

Mumbai (also known as Bombay, the official name until 1995) is the capital city of the Indian state of Maharashtra.

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Mytholmroyd

Mytholmroyd is a large village in Hebden Bridge, West Yorkshire, England, east of Burnley and west of Halifax.

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Nanjing

Nanjing, formerly romanized as Nanking and Nankin, is the capital of Jiangsu province of the People's Republic of China and the second largest city in the East China region, with an administrative area of and a total population of 8,270,500.

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Nanking Massacre

The Nanking Massacre was an episode of mass murder and mass rape committed by Japanese troops against the residents of Nanjing (Nanking), then the capital of the Republic of China, during the Second Sino-Japanese War.

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New Hampshire

New Hampshire is a state in the New England region of the northeastern United States.

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New York (state)

New York is a state in the northeastern United States.

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Newark, New Jersey

Newark is the most populous city in the U.S. state of New Jersey and the seat of Essex County.

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NOAA Weather Radio

NOAA Weather Radio (NWR; also known as NOAA Weather Radio All Hazards) is an automated 24-hour network of VHF FM weather radio stations in the United States that broadcast weather information directly from a nearby National Weather Service office.

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Norfolk County Council

Norfolk County Council is the top tier local government authority for Norfolk, England.

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North Somercotes

North Somercotes is a coastal village in the East Lindsey district, and the Marshes area, of Lincolnshire, England.

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Nuclear power

Nuclear power is the use of nuclear reactions that release nuclear energy to generate heat, which most frequently is then used in steam turbines to produce electricity in a nuclear power plant.

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Nuclear power plant

A nuclear power plant or nuclear power station is a thermal power station in which the heat source is a nuclear reactor.

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Oil refinery

Oil refinery or petroleum refinery is an industrial process plant where crude oil is transformed and refined into more useful products such as petroleum naphtha, gasoline, diesel fuel, asphalt base, heating oil, kerosene, liquefied petroleum gas, jet fuel and fuel oils.

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Oklahoma

Oklahoma (Uukuhuúwa, Gahnawiyoˀgeh) is a state in the South Central region of the United States.

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Ontario

Ontario is one of the 13 provinces and territories of Canada and is located in east-central Canada.

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Oregon

Oregon is a state in the Pacific Northwest region on the West Coast of the United States.

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ORF 2

ORF 2 is an Austrian television channel owned by ORF.

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Palestinian rocket attacks on Israel

Since 2001, Palestinian militants have launched thousands of rocket and mortar attacks on Israel from the Gaza Strip as part of the continuing Arab–Israeli conflict.

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People's Liberation Army

The Chinese People's Liberation Army (PLA) is the armed forces of the People's Republic of China (PRC) and Communist Party of China (CPC).

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Pickering Nuclear Generating Station

Pickering Nuclear Generating Station is a Canadian nuclear power station located on the north shore of Lake Ontario in Pickering, Ontario.

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Pierce County, Washington

Tacoma—seat of Pierce County Pierce County is a county in the U.S. state of Washington.

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Pitch (music)

Pitch is a perceptual property of sounds that allows their ordering on a frequency-related scale, or more commonly, pitch is the quality that makes it possible to judge sounds as "higher" and "lower" in the sense associated with musical melodies.

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Pneumatics

Pneumatics (From Greek: πνεύμα) is a branch of engineering that makes use of gas or pressurized air.

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Protezione Civile

The Protezione Civile (Civil Protection) department is the national body in Italy that deals with the prediction, prevention and management of exceptional events.

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Public switched telephone network

The public switched telephone network (PSTN) is the aggregate of the world's circuit-switched telephone networks that are operated by national, regional, or local telephony operators, providing infrastructure and services for public telecommunication.

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Public Warning System (Singapore)

The Public Warning System is a network of civil defense sirens installed by the Singapore Civil Defence Force on over 2,000 strategic points in Singapore to warn Singaporeans of impending dangers and air raids.

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Puyallup, Washington

Puyallup, Washington is a city in Pierce County, Washington, about 10 miles (16 km) southeast of Tacoma and 35 miles (56 km) south of Seattle.

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Pye Ltd.

Pye Ltd. was an electronics company founded in Cambridge, England, now wholly owned by Philips.

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Quebec Nordiques

The Quebec Nordiques (Nordiques de Québec, pronounced in Quebec French, in Canadian English; literally translated "Quebec City Northmen" or "Northerners") were a professional ice hockey team based in Quebec City, Quebec.

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Radio Télévision Suisse

The Radio Télévision Suisse (RTS) is a Swiss public broadcasting organisation, part of SRG SSR.

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Radio Val 202

Val 202 is a public-owned Slovene radio station.

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Radioactive contamination

Radioactive contamination, also called radiological contamination, is the deposition of, or presence of radioactive substances on surfaces or within solids, liquids or gases (including the human body), where their presence is unintended or undesirable (from the International Atomic Energy Agency - IAEA - definition).

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Radiotelevisione svizzera

Radiotelevisione svizzera di lingua italiana (RSI, abbreviated as RTSI until 28 February 2009) is a Swiss public broadcasting organisation, part of SRG SSR.

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Radiotelevisiun Svizra Rumantscha

Radiotelevisiun Svizra Rumantscha (RTR, Radio-Television Romansh Swirzerland or Swiss Romansh Radio-Television), formerly known as Radio e Televisiun Rumantscha (Romansh Radio and Television), is a Swiss broadcasting company (part of SRG SSR) which offers programming to Romansh-speakers in Switzerland and around the world.

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Red Color

The Red Colour (צבע אדום, transl.: Tzeva Adom) is an early-warning radar system installed by the Israel Defense Forces in several towns surrounding the Gaza Strip to warn civilians of imminent attack by rockets (usually Qassam rockets).

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Romania

Romania (România) is a sovereign state located at the crossroads of Central, Eastern, and Southeastern Europe.

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Romania in World War II

Following the outbreak of World War II on 1 September 1939, the Kingdom of Romania under King Carol II officially adopted a position of neutrality.

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Rotary woofer

A rotary woofer is a subwoofer-style loudspeaker which reproduces very low frequency content by using a conventional speaker voice coil's motion to change the pitch of a set of fan blades rotating at a constant speed.

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Royal Observer Corps

The Royal Observer Corps (ROC) was a civil defence organisation intended for the visual detection, identification, tracking and reporting of aircraft over Great Britain.

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Sandhurst, Berkshire

Sandhurst is a small town and civil parish in England of 7,966 homes and 20,803 inhabitants (2001 Census data), primarily domiciliary in nature with a few light industries.

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Sarnia

Sarnia is a city in Southwestern Ontario, Canada, and had a 2016 population of 71,594.

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Saskatchewan

Saskatchewan is a prairie and boreal province in western Canada, the only province without natural borders.

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Schaltbau Group

The Schaltbau Group is a group of mechanical and electrical engineering companies specialising in transportation related products, including automatic door systems for moving vehicles, level crossing equipment, electric connectors and switchgear and safety and warning equipment.

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Schweizer Radio und Fernsehen

Schweizer Radio und Fernsehen (SRF; Swiss Radio and Television) is a Swiss broadcasting company, created on 1 January 2011, through the merger of radio company, Schweizer Radio DRS (SR DRS) and television company, Schweizer Fernsehen (SF).

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Signal generator

A signal generator is an electronic device that generates repeating or non-repeating electronic signals in either the analog or the digital domain.

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Singapore

Singapore, officially the Republic of Singapore, is a sovereign city-state and island country in Southeast Asia.

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Siren (alarm)

A siren is a loud noise-making device.

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Skegness

Skegness is a seaside town and civil parish in the East Lindsey district of Lincolnshire, England, on the Lincolnshire coast of the North Sea, east of Lincoln.

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Slovenia

Slovenia (Slovenija), officially the Republic of Slovenia (Slovene:, abbr.: RS), is a country in southern Central Europe, located at the crossroads of main European cultural and trade routes.

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SMS

SMS (short message service) is a text messaging service component of most telephone, internet, and mobile-device systems.

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South Australian Country Fire Service

The South Australian Country Fire Service (SACFS, commonly abbreviated as CFS) is a volunteer based fire service in the state of South Australia in Australia.

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Soviet Union

The Soviet Union, officially the Union of Soviet Socialist Republics (USSR) was a socialist state in Eurasia that existed from 1922 to 1991.

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Spalding, Lincolnshire

Spalding is a market town with a population of 28,722 at the 2011 census, on the River Welland in the South Holland district of Lincolnshire, England.

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Spanish Civil War

The Spanish Civil War (Guerra Civil Española),Also known as The Crusade (La Cruzada) among Nationalists, the Fourth Carlist War (Cuarta Guerra Carlista) among Carlists, and The Rebellion (La Rebelión) or Uprising (Sublevación) among Republicans.

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Stator

The stator is the stationary part of a rotary system, found in electric generators, electric motors, sirens, mud motors or biological rotors.

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Storm surge

A storm surge, storm flood or storm tide is a coastal flood or tsunami-like phenomenon of rising water commonly associated with low pressure weather systems (such as tropical cyclones and strong extratropical cyclones), the severity of which is affected by the shallowness and orientation of the water body relative to storm path, as well as the timing of tides.

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Sutton Bridge

Sutton Bridge is a village and civil parish in the South Holland district of Lincolnshire, England.

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Texas

Texas (Texas or Tejas) is the second largest state in the United States by both area and population.

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The Blues Brothers (film)

The Blues Brothers is a 1980 American musical comedy film directed by John Landis.

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Todmorden

Todmorden (locally or) is a market town and civil parish in the Upper Calder Valley in Calderdale, West Yorkshire, England.

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Tornado

A tornado is a rapidly rotating column of air that is in contact with both the surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud.

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Tornado warning

A tornado warning (SAME code: TOR) is an alert issued by national weather forecasting agencies to warn the public that severe thunderstorms with tornadoes are imminent or occurring.

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Toronto

Toronto is the capital city of the province of Ontario and the largest city in Canada by population, with 2,731,571 residents in 2016.

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Tritone

In music theory, the tritone is defined as a musical interval composed of three adjacent whole tones.

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Tropical cyclone

A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain.

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Tsunami

A tsunami (from 津波, "harbour wave"; English pronunciation) or tidal wave, also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake.

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Turbine

A turbine (from the Latin turbo, a vortex, related to the Greek τύρβη, tyrbē, meaning "turbulence") is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work.

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Twitter

Twitter is an online news and social networking service on which users post and interact with messages known as "tweets".

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Types of volcanic eruptions

Several types of volcanic eruptions—during which lava, tephra (ash, lapilli, volcanic bombs and volcanic blocks), and assorted gases are expelled from a volcanic vent or fissure—have been distinguished by volcanologists.

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Upper Calder Valley

The Upper Calder Valley lies in West Yorkshire, in northern England, and covers the towns of Todmorden, Hebden Bridge, Mytholmroyd, Luddendenfoot, and Sowerby Bridge, as well as a number of smaller settlements such as Portsmouth, Cornholme, Walsden, and Eastwood.

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Valencia

Valencia, officially València, on the east coast of Spain, is the capital of the autonomous community of Valencia and the third-largest city in Spain after Madrid and Barcelona, with around 800,000 inhabitants in the administrative centre.

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Variable-message sign

A variable- (also changeable-, electronic-, or dynamic-) message sign, often abbreviated VMS, CMS, or DMS, and in the UK known as a matrix sign, is an electronic traffic sign often used on roadways to give travelers information about special events.

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Venice

Venice (Venezia,; Venesia) is a city in northeastern Italy and the capital of the Veneto region.

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Virginia Tech shooting

On April 16, 2007, a school shooting occurred at West Ambler Johnston Hall and Norris Hall at the Virginia Polytechnic Institute and State University, in Blacksburg, Virginia.

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W.S. Darley & Co.

W.S. Darley & Co. is a designer, manufacturer and distributor of firefighting, defense and emergency services equipment, based in Itasca, Illinois, USA.

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Walcott, Norfolk

Walcott is a small village and civil parish on the North Norfolk coast in England between Mundesley and Happisburgh.

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Walsden

Walsden is a large village in the civil parish of Todmorden in the Metropolitan Borough of Calderdale, West Yorkshire, England, though historically partially administered in Lancashire (the Walsden Water as tributary to the Calder serving as the county boundary), and close to the modern boundary with Greater Manchester.

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Washington (state)

Washington, officially the State of Washington, is a state in the Pacific Northwest region of the United States.

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Weapon of mass destruction

A weapon of mass destruction (WMD) is a nuclear, radiological, chemical, biological or other weapon that can kill and bring significant harm to a large number of humans or cause great damage to human-made structures (e.g., buildings), natural structures (e.g., mountains), or the biosphere.

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Westminster Quarters

The Westminster Quarters is the most common name for a clock chime melody used by a set of four bells to chime on each quarter-hour.

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Wisconsin

Wisconsin is a U.S. state located in the north-central United States, in the Midwest and Great Lakes regions.

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Wokingham

Wokingham is an historic market town in Berkshire, England, west of London, southeast of Reading, north of Camberley and west of Bracknell.

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Wykebeck

Wykebeck is an area of Leeds, West Yorkshire, England named after the Wyke Beck.

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Yom HaShoah

Yom Hazikaron laShoah ve-laG'vurah (יום הזיכרון לשואה ולגבורה; "Holocaust and Heroism Remembrance Day"), known colloquially in Israel and abroad as Yom HaShoah (יום השואה) and in English as Holocaust Remembrance Day, or Holocaust Day, is observed as Israel's day of commemoration for the approximately six million Jews who perished in the Holocaust as a result of the actions carried out by Nazi Germany and its collaborators, and for the Jewish resistance in that period.

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Yom Hazikaron

Yom Hazikaron (יוֹם הַזִּכָּרוֹן; lit. "Memorial Day"), in full Yom Hazikaron l'Chalalei Ma'arachot Yisrael ul'Nifge'ei Pe'ulot Ha'eivah (Hebrew:; lit. "Memorial Day for the Fallen Soldiers of Israel and Victims of Terrorism"), is Israel's official remembrance day, enacted into law in 1963.

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2007 United Kingdom floods

A series of destructive floods occurred in parts of the United Kingdom during the summer of 2007.

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Redirects here:

2T22, Air Raid Siren, Air Raid Sirens, Air alarm, Air raid siren, Air raid sirens, Air raid warning, Civil Defense Siren, Civil defence siren, Civil defense sirens, Community Siren, Emergency siren, Municipal Siren System, Nuclear Alarm, Outdoor Warning Siren, Outdoor warning siren, Rotator gear, Storm siren, Thunderbeam, Tornado Siren, Tornado siren, Tornado sirens.

References

[1] https://en.wikipedia.org/wiki/Civil_defense_siren

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