Maj. Gen. David Eichhorn, Air Force Flight Test Center commander at Edwards Air Force Base, Calif., speaks during the commemoration of the T-38 Talon’s first flight April 10 at the Northrop Grumman facility in El Segundo, Calif. Duke Dufresne (center), sector vice president and general manager of the Strike and Surveillance Systems division of Northrop Grumman Aerospace Systems, and Dan Rooney, former Northrop Aircraft Division vice president, also provided remarks during the event. (U.S. Air Force photo/Michael Briggs)