Wranglers steadied the X-40A at NASA's Dryden Flight Research Center, Edwards, California, March 14, 2001, as the experimental craft was carried to 15,000 feet for an unpiloted glide flight
A worker attaches covers for the nose pitot boom before removing the unpiloted X-40 from the runway at Edwards Air Force Base, California, following its successful free-flight on March 14, 2001
The X-43A hypersonic research aircraft and its modified Pegasus® booster rocket mounted to NASA's NB-52B carrier aircraft at the Dryden Flight Research Center, Edwards, California