U.S. Air Force Reserve Staff Sgt. Rachel Clark, personnel journeyman, 913th Force Support Squadron, buckles in for a flight home June 4, 2017, at Keesler Air Force Base, Miss. Clark was a participant in the 913th Airlift Group’s first readiness exercise Prime Horizon, which took place simultaneously at both Little Rock and Keesler Air Force Bases. (U.S. Air Force photo by Master Sgt. Jeff Walston/Released)