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  2. 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 ...

  3. File:Set of Crash Bar Doors.jpg - Wikipedia

    en.wikipedia.org/wiki/File:Set_of_Crash_Bar...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate

  4. 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 ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  6. Today’s NYT ‘Strands’ Hints, Spangram and Answers for Sunday ...

    www.aol.com/today-nyt-strands-hints-spangram...

    We'll cover exactly how to play Strands, hints for today's spangram and all of the answers for Strands #287 on Sunday, December 15. Related: 16 Games Like Wordle To Give You Your Word Game Fix ...

  7. 1951 USAF resolution test chart - Wikipedia

    en.wikipedia.org/wiki/1951_USAF_resolution_test...

    Glass chart. A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.

  8. Damar Hamlin's life was saved by an AED. Here are 5 things ...

    www.aol.com/lifestyle/damar-hamlins-life-saved...

    Nearly two years ago, NFL fans watched in horror as Buffalo Bills safety Damar Hamlin collapsed on the field after experiencing a sudden cardiac arrest (SCA) midgame. But the now-26-year-old ...

  9. Test Card F - Wikipedia

    en.wikipedia.org/wiki/Test_Card_F

    At the centre bottom of the test card is an animated grey bar with graduations corresponding to 1/12 of a second. The animation is accompanied by a 'pip' that occurs when the animated bar reaches the centre mark (indicated by a 0), which together can be used to determine whether the digital audio and video signals are synchronised.