Lt. Gen. Ingo Gerhartz, chief of staff for the German air force, speaks to German student pilots, instructors and permanant party stationed at Sheppard Air Force Base, Texas, Dec. 13, 2019. Also in the audience were members of the GAF tactical training center headquarters, which recently transferred here from Holloman AFB, New Mexico. (U.S. Air Force Photo by 2nd Lt. Megan Morrissey)