Air Force Capt. Whit Gremillion performs preflight checks in the cockpit of a C-17 Globemaster III after delivering members of a U.S. Agency for International Development elite disaster team and their equipment to the Mexico City International Airport, Mexico, Sept. 21, 2017. Gremillion is a pilot assigned to the 21st Airlift Squadron. Air Force photo by Master Sgt. Joseph Swafford