Airman Darius Phillips, 364th Training Squadron electrical and environmental systems apprentice course student, looks out of a C-130 Hercules trainer at Sheppard Air Force Base, Texas, Dec. 6, 2018. Phillips is performing an operations check with his partner. His partner will use the pilots controls on the inside while Phillips will check if they function correctly. (U.S. Air Force photo by Airman 1st Class Pedro Tenorio)