53rd squadron flies first F-35 sortie at Nellis AFB
U.S. Air Force Capt. Brad Matherne, 422nd Test and Evaluation Squadron
pilot, conducts pre-flight checks inside an F-35A Lightning II before a
training mission April 4, 2013, at Nellis Air Force Base, Nev. The F-35A
will be integrated into advanced training programs such as the USAF
Weapons School, Red Flag and Green Flag exercises.
(U.S. Air Force photos by Senior Airman Brett Clashman)