I've seen a case where half the sleeping bags were stolen from the armory. The other half were unrolled, cut in half, then re-rolled loosely, so that, when looking at them way up on the top shelf, there appeared to be the correct number of sleeping bags present ...
The guy who was rumored to have taken the night sight didn’t have access to the armory, as far as I know. The stuff in the armory was secured behind a locked steel door and a locked steel-cage door and the firearms were individually locked into steel racks. I assume the other sensitive (expensive) items were locked in cabinets. The sight must have been taken as items were being returned to the armory, but, to the best of my knowledge, the armorer wasn’t disciplined for failing to verify the return of an item.