U.S. Air Force Capt. Nicolas DeWulf, the 13th Fighter Squadron Bravo Flight commander, conducts pre-flight inspections prior to flying tail number 400, an F-16 Fighting Falcon, at Misawa Air Base, Japan, Jan. 18, 2018. Pre-flight inspections ensure the safety of an aircraft before leaving the flightline. (U.S. Air Force photo by Airman 1st Class Collette Brooks)