I am ex military from 89-96 I left the military on a medical discharge in 96 because I was an adrenaline junkie and would always volunteer to help with H.A.L.O jump training. in the beginning on 96 I was working on getting my master jump wings and was only a few jumps from earning them when helping train new rangers on H.A.L.O Jumps. High Altitude Low Oxygen your over 30k feet in the air when you jump its very cold up there and the oxygen is so little you have to wear an oxygen mask. At this point in Training everyone knows how to pack their own chutes and as a trust exercise because in the shit you have to trust your buddy with your life and the lives of all of your squad, they would have the guy first in line pass his chute to the guy behind him and the last guy would then give his to the guy first in line. I had done this about 40 times so it was no biggie for me. Jump time I am at the door lights green and I jump. after a few minutes I look at my wrist alt gauge and its abo