When you search a subject it is a good idea to pull the shirt tail out and check it, especially behind the back. I once had a subject who had a laundry pin attached to a shirt tail and it made me think how easy it would be to pin a handcuff key to the shirt tail behind your back. I have done this in officer survival training and successfully removed cuffs from behind my back in the back of a patrol car. Just one more thing to make sure that the bad guy doesn’t get the upper hand.