Airman 1st Class Aaron Chung, 31st Security Forces Squadron security response team member, sits in the turret of a Humvee with an M240 Bravo at Aviano Air Base, Italy, July 29, 2020. Chung provided security protection during a quarterly exercise. Security forces personnel are the Air Force's first line of defense, maintaining the rule of law on all Air Force bases and installations. (U.S. Air Force photo by Airman 1st Class Ericka A. Woolever)