Airman 1st Class Taitem Zeigler, 361st Training Squadron aircraft fuels systems apprentice course student, scrapes old sealant from a training panel at Sheppard Air Force Base, Texas, July 25, 2018. The sealant prevents fuels from leaking through fasteners and other structures on an aircraft's internal fuel tank. Zeigler earned the ACE award after he scored 100s on each of his tests during the 36-day course. (U.S. Air Force photo by John Ingle)