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  2. 2018 Hawaii false missile alert - Wikipedia

    en.wikipedia.org/wiki/2018_Hawaii_false_missile...

    Type. False alarm. On the morning of January 13, 2018, an alert was accidentally issued via the Emergency Alert System and Wireless Emergency Alert System over television, radio, and cellular networks in the U.S. state of Hawaii, instructing citizens to seek shelter due to an incoming ballistic missile. It concluded with "This is not a drill".

  3. Civil defense siren - Wikipedia

    en.wikipedia.org/wiki/Civil_defense_siren

    Air raid alarm (Flyglarm): a 1-minute pattern of 2 second tones separated by 2 second gaps. Sent when the threat of an air attack is imminent. Important public announcement, general alarm (Viktigt meddelande till allmänheten): a pattern of 7 second long tones and 14 second long gaps. People should go inside, close windows and doors, close ...

  4. Time bomb - Wikipedia

    en.wikipedia.org/wiki/Time_bomb

    A time bomb (or a timebomb, time-bomb) is a bomb whose detonation is triggered by a timer. The use or attempted use of time bombs has been for various purposes including insurance fraud, terrorism, assassination, sabotage and warfare. They are a frequent plot device in thriller and action films as they offer a way of imparting a dramatic sense ...

  5. 2010 Times Square car bombing attempt - Wikipedia

    en.wikipedia.org/wiki/2010_Times_Square_car...

    Convicted. Faisal Shahzad. On May 1, 2010, a terrorist attack was attempted in Times Square in Manhattan, New York, United States. Two street vendors alerted NYPD after they spotted smoke coming from a vehicle, and a car bomb was discovered. [1] [2] The bomb had been ignited, but failed to explode, and was disarmed before it caused any casualties.

  6. Four-minute warning - Wikipedia

    en.wikipedia.org/wiki/Four-minute_warning

    The four-minute warning was a public alert system conceived by the British Government during the Cold War and operated between 1953 and 1992. The name derived from the approximate length of time from the point at which a Soviet nuclear missile attack against the United Kingdom could be confirmed and the impact of those missiles on their targets.

  7. Ahmed Mohamed clock incident - Wikipedia

    en.wikipedia.org/wiki/Ahmed_Mohamed_clock_incident

    On September 14, 2015, 14-year-old Ahmed Mohamed was arrested at MacArthur High School in Irving, Texas, for bringing a disassembled digital clock to school. The incident ignited allegations of racial profiling and Islamophobia from many media sources and commentators. The episode arose when Mohamed reassembled the parts of a digital clock in ...

  8. Nuclear close calls - Wikipedia

    en.wikipedia.org/wiki/Nuclear_close_calls

    A bomb was mistakenly dropped by a U.S. Air Force Boeing B-47E-LM Stratojet near Savannah, Georgia, when a man in the bomb bay area grabbed the emergency release pin by accident. Similar to the 1957 incident, safety precautions meant that the plutonium was not mounted to the bomb but rather stored elsewhere on the plane at the time.

  9. Casio F-91W - Wikipedia

    en.wikipedia.org/wiki/Casio_F-91W

    June 1989 [ 1] The Casio F-91W is a digital watch manufactured by Japanese electronics company Casio. Introduced in June 1989 [ 1] as a successor of the F-87W, [ 2] it is popular for its low price and long battery life. [ 3] As of 2011, annual production of the watch is 3 million units, which makes it the most sold watch in the world.