Lt. Col. Douglas Jantzen, 14th Flying Training Wing Chief of aircraft Maintenance, pauses next to a T-6 Texan II after his familiarization flight Sept. 10 on the Columbus Air Force Base flightline. The flight occurred on the 40th anniversary of Jantzen’s enlistment into the United States Air Force, making him the most senior lieutenant colonel in the U.S. Air Force. (U.S. Air Force photo/Melissa Dublin)