[MarkSheppard]

Looks nice those aircraft revetments, but what about when the 'bunker' gets destroyed? Then the revetments would 'disappear'.

Uh, Bunkers don't disappear, they get a burning plume of smoke or a mashed up wreckage icon.

So how many crew do you give it as crew losses will likely be the biggest problem in keeping the revetments intact when facing small arms and mortar fire?

Perhaps 3 (to represent crew chiefs and maintenance people caught in near their aircraft and hiding); the entire point is not to make the uber invunerable to small arms or mortar fire; if you emptied a M-16 into a F-16 or an 81mm mortar hit near an F-16, the plane is pretty much going to be inoperable without major work, barring an act of God in which all the bullets and mortar fragments miss important bits.