Capts. Scott Levin. Michael Sattes, 437th Airlift Wing, Joint Base Charleston, S.C., pilots, Joint Base Charleston, prepare a C-17 for take-off during Red Flag 16-3 at Nellis Air Force Base, Nev., July 20, 2016. In addition to daytime operations, Red Flag conducts training exercises during hours of darkness to train for low visibility environment. (U.S. Air Force photo by Airman 1st Class Kevin Tanenbaum/Released)