The B-17 bomber was modified to perform the Skyhook process, which is a way by which a flying aircraft can "grab" a stationary object sitting on the ground. Robert Fulton was the inventor of the Skyhook system, which was also known as the Surface-To-Air-Recovery System. Photo courtesy of CIA. Intermountain Aviation's B-17 at Point Barrow, May 1962. (Credit: Robert E. Fulton)