USAF, 92-96. We got to play with the M16 once, during basic. NOT allowed to put it on FA. One kid did and got 'washed back' for it.
Dad was based in the Philippines during the Tet Offensive. Some local hostiles stole all their guns from the locker a couple nights prior, and took pot shots with them from the woods. The only folks on base with firearms were the MP's and they yelled at the airmen to "get your ***heads down!" while laying into the aggressors with 50's.