Maintenance is performed on an F-35B Lightning II on the flight deck of USS Wasp (LHD-1) during routine daylight operations, a part of Operational Testing 1, May 22. OT-1 is serving the purpose of evaluating the full spectrum of F-35B measures of suitability and effectiveness, as well as assessing the integration of the aircraft into the spectrum of flight operations. The F-35B is with Marine Fighter Attack Training Squadron 501, Marine Aircraft Group 31, 2nd Marine Aircraft Wing. (Marine Corps photo by Cpl. Anne K. Henry/RELEASED)