April 12, 2018 F-35 completes most comprehensive flight test program in aviation history The F-35 Integrated Test Force, based at Edwards Air Force Base, California, and Naval Air Station Patuxent River, Maryland, has completed more than 65,000 test points, 9,200 test flights, and six major test aircraft detachments on board L-class and Nimitz class carriers on both U.S. coasts.