Вот что мне ответил один амерский летун по поводу кармана. Правда, он, видимо, ответил про карман на штанах, а я спрашивал его про карманчик прорезной на блузе:
That is a long narrow pocket. That is a carry over from the Vietnam War, or earlier. There is usually a nylon string inside, and the pilot could attach a pocket knife. Years ago the US Army gave pilots a knife that was a switchblade. You know that the Army flight gear came mainly from the US Air Force---well they fly high---and may have to jettison---so if they came down in a parachute, they may be stuck up in a tree, or maybe their shroud lines are not right. So then that pilot might want to cut his lines, to get out of the tree. So he can reach down to that pocket, unsnap it, he gets his switchblade out. The knife has one regular blade, but has a shroud cutter (like a hook).So that is the history of the pocket. Most Army pilots, flying choppers---have no way of bailing out in a chute. So we can still carry a knife, the pocket survival knife, and we can tie it with the sting that is in the pocket, so it won't get lost. But mostly pilots carry the orange silk day glow panel. They can be left in the flight suit during washing and drying. They stay in there all the time so they are ready to be used. If a pilot has three flight suits, they all have the orange day glow panel inside. Hope this helps.