This week in Edwards flight test history Published Sept. 22, 2016 412th Test Wing Public Affairs EDWARDS AIR FORCE BASE, Calif. -- On Sep. 24, 2010 at Edwards AFB - The 418 Flight Test Squadron concluded flight testing to evaluate modifications of the C-17 “Globemaster III” formation flight system. The system enabled pilots to monitor and fly the large transport with other C-17s at the same altitude and distance in any weather condition. The FFS flight testing took about two weeks to complete.