U.S. Air Force Airman 1st Class Ryan Bray, 633rd Civil Engineering Squadron heating and ventilation journeyman, assembles the connection port to a system they call “Rover” at Langley Air Force Base, Va., Nov. 20, 2014. The Airmen used “Rover” to reset the dormitory room’s ventilation system and change its settings. (U.S. Air Force photo by Airman 1st Class Devin Scott Michaels/Released)