Air Force Maj. Timothy Birt and Capt. Greg Sewell conduct pre-flight checks inside the cockpit of a C-17 Globemaster III on the ramp at Joint Base Elmendorf-Richardson, Alaska, July 12, 2017, before takeoff to participate in Exercise Talisman Saber 2017. Birt and Sewell are pilots assigned to the 15th Airlift Squadron, deployed from Joint Base Charleston, S.C. Air Force photo by Tech. Sgt. Gregory Brook