On-orbit servicing technology demonstrator. XSS-10, a 28 kilogram microsatellite, was launched as a secondary payload aboard the Delta 2 launch vehicle carrying a Global Positioning Satellite (GPS) satellite. The mission demonstrated the complex interactions of line-of-sight guidance with basic inertial maneuvering. The micro-satellite was attached to the Delta 2 second stage. Once the second stage separated from the GPS satellite, the microsatellite waited for a sunlit Air Force Space Control Network pass before ejecting from the second stage. Once ejected, the microsatellite commenced an autonomous inspection sequence around the second stage, and live video was transmitted to ground stations. The entire mission lasted only 24 hours. Launch delayed from June 11 and August 16, 2001; March 6, April 29, August 11 and November 7, 2002.

Delayed from November 9, 2004; January 19, March 18, 2005. Military Autonomous Rendezvous Technology. It tested navigation technologies for rendezvous that directly measured relative position to the target satellite. It was have to rendezvoused with several defunct American satellites. However it was only known to have conducted operations with its own Minotaur upper stage

Tacsat-2 was a prototype rapid development/rapid deployment tactical military satellite that provided American Joint Task Force commanders direct control of a satellite providing both SIGINT and imagery with a resolution of better than 1-m. The known communications payload used an 8 GHz (X-band) downlink. This was the first orbital launch from Wallops Island since 1985. TacSat-2 was to have been launched by a Falcon-1 from Vandenberg into a sun-synchronous orbit. However, the failure of Falcon-1 on its long-delayed maiden in March 2006 caused AFRL to award a new launch contract for TacSat-2 and TacSat-3 to OSC in May 2006. The launch was achieved using OSC's Minotaur launch vehicle only seven months after contract award.