I wonder if the crew in these aircraft, KC-135, C-17, C-130 and such, is generally equipped with parachutes. I'd expect at least some crew members to survive if they have parachutes.
I don't think this guy is part of the tank crew at all. If you look closely at 00:56-00:58 you can see movement at the rear left side of the tank. This guy is probably a soldier using the tank as cover, and he got lucky cause the tank indeed shielded him from the blast.