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2. Crash bar - Wikipedia

   en.wikipedia.org/wiki/Crash_bar

   A crash bar (also known as a panic exit device, panic bar, or bump bar) [1] [2] is a type of door opening mechanism which allows users to open a door by pushing a bar. While originally conceived as a way to prevent crowd crushing in an emergency, crash bars are now used as the primary door opening mechanism in many commercial buildings.

3. M1 mortar - Wikipedia

   en.wikipedia.org/wiki/M1_mortar

   If set on delay, the super-quick flash igniter mechanism was immobilized to prevent premature ignition. Models: M48, M48A1, M48A2 (either 0.05 or 0.15 second Delay), & M48A3 (0.05 second delay). M51 point detonating (PD) fuze: selective powder train burning fuze that can be set to super quick or delay ignition after impact. It is a modification ...

4. Ram Air Progression System - Wikipedia

   en.wikipedia.org/wiki/Ram_Air_Progression_System

   Usually on the second 15-second delay the student will be given a hand-mounted altimeter for the first time, and will pull either after 15 seconds or earlier if they fall to a determined height. The 20-second delay will almost always be performed with an altimeter, and the student will generally pull based on the reading of the altimeter rather ...

5. United States hand grenades - Wikipedia

   en.wikipedia.org/wiki/United_States_hand_grenades

   A mouse trap type electrical impact fuze, 1 second delay, detonation sets off filler M228 M69 Training fuze with functional fuze to train on the 4–5 second delay C12 M25/A1/A2 Integral detonating fuze, 1.4–3 second delay, detonator bursts body scattering agent M200/A1 M6/A1, M7, M8, M14, M16, M18 A mouse trap type igniting fuze.

6. American Airlines Flight 1420 - Wikipedia

   en.wikipedia.org/wiki/American_Airlines_Flight_1420

   Seating chart for American Airlines Flight 1420 created by the NTSB, revealing the location of passengers and lack of injury, severity of injuries, and deaths. The aircraft involved in the incident was a McDonnell Douglas MD-82 (registration N215AA [2]), a derivative of the McDonnell Douglas DC-9, and part of the McDonnell Douglas MD-80 series of aircraft.

7. Anti-intrusion bar - Wikipedia

   en.wikipedia.org/wiki/Anti-intrusion_bar

   An anti-intrusion bar or beam is a passive safety device, installed in most cars and other ground vehicles, which must protect passengers from side impacts. [1] Side impacts are particularly dangerous for two reasons: a) the location of impact is very close to the passenger, who can be immediately reached by the impacting vehicle; b) in many side-impact accidents, the impacting vehicle may be ...

8. STU-III - Wikipedia

   en.wikipedia.org/wiki/STU-III

   STU-III secure telephones on display at the National Cryptologic Museum in 2005.. Most STU-III units were built for use with what NSA calls Type 1 encryption.This allows them to protect conversations at all security classification levels up to Top Secret, with the maximum level permitted on a call being the lower clearance level of the two persons talking.

9. Halo (safety device) - Wikipedia

   en.wikipedia.org/wiki/Halo_(safety_device)

   The halo system on a Ferrari SF71H driven by Kimi Räikkönen during pre-season testing in February 2018. The halo is a driver crash-protection system used in open-wheel racing series, which consists of a curved bar placed above the driver's head to protect it.