Second free-flight of the X-40A at the NASA Dryden Flight Research Center, on Edwards AFB, Calif., was made on Apr. 12, 2001. The unpowered X-40A, an 85 percent scale risk reduction version of the proposed X-37, proved the capability of an autonomous flight control and landing system in a series of glide flights at Edwards. The April 12 flight introduced complex vehicle maneuvers during the landing sequence. The X-40A was released from an Army Chinook helicopter flying 15,050 feet overhead. Ultimately, the unpiloted X-37 is intended as an orbital testbed and technology demonstrator, capable of landing like an airplane and being quickly serviced for a follow-up mission. This X-40A free flight was made on the 20th anniversary of the first launch of the space shuttle.