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 read out various tasks that their team will have to complete, right now they are checking the jet's exterior lights. (U.S. Air Force photo by Airman 1st Class Pedro Tenorio)