ANYONE WHO SERVES IN THE U.S. MILITARY ... and does not posses a basic, inherent, came-to-the-party-with, or ... a trained-to-proficiency, learned, practiced knowledge and familiarity w/ a variety of personal small-arms ...
... should be sellin' ladies' shoes @ Nordstrom's.
I've been to a qualification range (M16) with an Army band unit. Let me say this: The world is a safer place when they don't have weapons in their hands. The same thing goes for medical corps personnel, keep them away from firearms! Granted, there are always exceptions, but the world is a safer place when they don't have weapons.
SHOULD they know what they're doing with their weapons? YES! But since many of them are damn near untrainable...I say some people just shouldn't touch weapons.