U.S. Air Force Gen. Hawk Carlisle, commander of Air Combat Command, receives a brief by Master Sgt. Juan Trujillo, 1st Maintenance Squadron jet engine intermediate maintenance shop non-commissioned officer in charge, about the shop’s operations and responsibilities within the 1st Fighter Wing during a tour at Langley Air Force Base, Va., March 13, 2015. Carlisle, Chief Master Sgt. Steve McDonald, command chief of Air Combat Command, and their wives, Gillian and Jennifer, visited the 633rd Air Base Wing, 1st FW, 192nd Fighter Wing and 733rd Mission Support Division. (U.S. Air Force photo by Senior Airman R. Alex Durbin/Released)