Tech. Sgt. Jeremy Bartram, KC-135R Stratotanker Crew Chief, 108th Wing, New Jersey Air National Guard, opens a fan duct on a CFM-56 turbofan engine at Joint Base McGuire-Dix-Lakehurst, N.J., Nov. 5, 2016. (U.S. Air National Guard photo by Master Sgt. Mark C. Olsen/Released)