Airman 1st Class Jordan Kimble, 364th Training Squadron electical and environmental apprentice course student, removes and installs a transformer rectifier on a F-15 Eagle trainer jet at Sheppard Air Force Base, Texas, Dec. 6, 2018. E&E systems technicians are responsible for several components in almost every aircraft in the Air Force, excluding the newer F-22 Raptor and F-35 Lightning II. (U.S. Air Force photo by Airman 1st Class Pedro Tenorio)