US, UK leaders mark F-35A milestone
An F-35 Lightning II from the 34th Fighter Squadron at Hill Air Force Base, Utah, launches for a sortie at Royal Air Force Lakenheath, England, April 19, 2017. The fifth generation, multi-role fighter aircraft is deployed here to maximize training opportunities, affirm enduring commitments to NATO allies, and deter any actions that destabilize regional security. (U.S. Air Force photo/Senior Airman Malcolm Mayfield)