A U.S. Air Force F-35 Lightning II demonstration pilot waves to a crowd during the AirPower over Hampton Roads Open House at Langley Air Force Base, Va., April 24, 2016. With its aerodynamic performance and advanced integrated avionics, the F-35 aims to provide next-generation stealth, enhanced situational awareness and reduced vulnerability for the United States and allied nations across the globe. (U.S. Air Force photo by Senior Airman R. Alex Durbin)