1st Lt. Zachary Watkins, 51st Security Forces Squadron

1st Lt. Zachary Watkins, 51st Security Forces Squadron Alpha and Bravo flight commander, gives an outbrief to Airmen after a simulated opposing forces attack during readiness exercise Vigilant Ace 16 on Osan Air Base, Republic of Korea, Nov. 4, 2015. During the attacks the defenders practiced base defense to help with responding to real world contingencies. Vigilant Ace 16, a peninsula-wide exercise, involving more than 16,000 participants. (U.S. Air Force photo/Senior Airman Kristin High)