Staff Sgt. Chantal Campbell, 1st Helicopter Squadron mission controller, views information about helicopter flights at Joint Base Andrews, Md., April 13, 2017. Mission controllers are responsible for communicating with flight crews and relaying essential information to them. During the F-16 Fighting Falcon crash incident April 5, they directed two UH-1N Iroquois to the scene to medically evacuate the downed pilot. (U.S. Air Force photo by Senior Airman Jordyn Fetter)