Senior Airman Joshua Alprete, 316th Security Forces Squadron military working dog handler, practices controlled aggression with Boy, his Belgian Malinois Shepherd, and Senior Airman Benjamin Lee, 316 SFS military working dog handler, at Joint Base Andrews, Md. In this exercise, Airman Alprete demonstrates protocol for when a suspicious person is spotted during routine security sweeps. He firsts asks the person for I.D. and to come speak with him, and if for some reason the person flees, he releases his dog to stop the suspect. (U.S. Air Force photo by Chelsea Gitzen)