Second Security Forces Squadron personnel escort Airmen to safety during a hijacking exercise on the flight line at Barksdale Air Force Base, La., August 14, 2018. Air Force and DoD instructions direct annual exercises to keep units mission ready. These exercises range from hijackings to active shooters. (U.S. Air Force photo by Airman 1st Class Tessa B. Corrick) Disclaimer: Badges in the photo have been covered for security purposes.