U.S. Air Force Tech. Sgt. Alexis Smith, a crew chief assigned to the 633rd Civil Engineer Squadron fire department, participates in a controlled burn at Langley Air Force Base, Va., April 17, 2016. Along with the burn, the 633rd CES fire department spent time practicing different scenarios that could occur during AirPower over Hampton Roads Open House. (U.S. Air Force photo by Senior Airman Kayla Newman)