Team Sheppard: A week in photos Published March 16, 2017 By Liz H. Colunga 82nd Training Wing Public Affairs SHEPPARD AIR FORCE BASE, Texas -- Airmen Michael Alejo, Dyllan Galloway and Jacob Ramirez, 363rd Training Squadron F-15 Eagle aircraft armament systems apprentice students, learn how to apply and remove external electrical power to and from the aircraft, March 2, 2017. This is the first step in learning to perform operations check on the weapons systems of the F-15 Eagle aircraft. (U.S. Air Force photo by Liz H. Colunga/Released)