The AF medic vet says the flak jacket was vulnerable at the seams but that it was still pretty rugged. I guess the other scissors were more like shears. Just like in an ER trauma situation, those guys show up and just start cutting away anything that's in their way. It's the patient, not his or her gear or clothes, that matters. As a horseman, I heard of a jumping accident in which a rider broke his tibia. He was wearing tall formal boots. That boot wasn't coming off in one piece. They managed to cut a nice straight line, but cut it they did. I can't imagine being able to pull a tall boot off with a broken leg!
Oh, I had a lodge brother back in DC who was in the Coast Guard and he used to carry a sheepfoot blade rigging knife with a shackle opener and a marlinspike. Now, I can't imagine he used it a lot, but those things will cut. I never asked him how much use he got out of it, but I imagine it was, for him, a kind of sentimental accoutrement of his service. It was even on a braided line in his pocket! He was an officer and no one was going to give him any grief, I guess.
My dad served on troop carriers before sub school, so he might have had a deck knife then. I'll ask him.
Zieg