Capts. Kristina Himmelreich, left and Erin Killion, second from left, both pilots; and Senior Airman Tara Thorpe, loadmaster, second from right; listen to Capt. Ellen Canup, instructor pilot, right, during their mission aircrew briefing March 25, 2015, on Dover AFB, Del. The all-female aircrew from the 3d Airlift Squadron, air refueled with a KC-135 and practiced short runway assault landings during a local training mission. (U.S. Air Force photo/Roland Balik)
Capt. Ellen Canup, 3d Airlift Squadron instructor pilot, programs the mission computer on a C-17 Globemaster III prior to departure March 25, 2015, at Dover AFB, Del. Canup was part of an all-female aircrew from the 3d AS consisting of three pilots and a loadmaster during a local training mission. (U.S. Air Force photo/Roland Balik)
Capt. Ellen Canup, 3d Airlift Squadron instructor pilot, reviews an airfield diagram on the flight deck of a C-17 Globemaster III March 25, 2015, at Dover AFB, Del. Canup, with approximately 2,700 flying hours under her belt, assisted an aircraft commander get recurrent and another aircraft commander ready for instructor pilot upgrade training during a local training mission. (U.S. Air Force photo/Roland Balik)
Capts. Ellen Canup, Kristina Himmelreich, Erin Killion, all pilots and Senior Airman Tara Thorpe, loadmaster, all from the 3d Airlift Squadron, pose for a photo prior departure March 25, 2015, at Dover AFB, Del. The all-female aircrew accomplished air refueling and short runaway assault landings during this local training mission. (U.S. Air Force photo/Roland Balik)
Capt. Erin Killion, 3d Airlift Squadron, listens to other aircrew members go over mission data March 25, 2015, at Dover AFB, Del. Killion, a C-17 Globemaster III pilot of three years, was on this local training mission to become recurrent as an aircraft commander. (U.S. Air Force photo/Roland Balik)
Senior Airman Tara Thorpe, 3d Airlift Squadron loadmaster, watches the C-17 Globemaster III number three engine start up March 25, 2015, on Dover AFB, Del. Thorpe was part of an all-female aircrew during a local training mission. (U.S. Air Force photo/Roland Balik)
Capt. Erin Killion, 3d Airlift Squadron pilot, looks out the pilot's side window of a C-17 Globemaster III prior to engine start up March 25, 2015, at Dover AFB, Del. Killion, who is 15 weeks pregnant, was on this local training mission consisting of air refueling and short runway assault landings. (U.S. Air Force photo/Roland Balik)
An all-female C-17 Globemaster III aircrew from the 3d Airlift Squadron takes off on a local training mission March 25, 2015, at Dover AFB, Del. The three pilots and one loadmaster were unintentionally scheduled to fly as an aircrew during National Women's History Month. (U.S. Air Force photo/Roland Balik)