The North American X-15 rocket-powered research aircraft touches down on the dry lakebed at Edwards Air Force Base, trailing dust from its skid landing gear, as a chase aircraft follows overhead. Flown jointly by NASA, the U.S. Air Force, and U.S. Navy from 1959 to 1968, the X-15 set speed and altitude records that helped pave the way for America's crewed spaceflight programs. Project: 218462