12th Flying Training Wing Aerospace Ground Equipment Maintenance
Jonathan Beres, 12th Flying Training Wing aerospace ground equipment mechanic, checks the oil levels on an aircraft New Generation Heater during routine maintenance Aug. 28, 2018, at Joint Base San Antonio-Randolph, Texas. Beres is part of a team that inspects, tests and maintains ground equipment that supports aircraft maintenance and flying training operations. (U.S. Air Force photo by Sean M. Worrell)