The F-15 Short Take Off and Landing/Maneuver Technology Demonstrator (STOL/MTD), arrived June 15, 1993, at NASA's Dryden Flight Research Facility, Edwards, California. The aircraft, using a multi-axis thrust vectoring system, is being used as a testbed for a number of advanced research projects replacing Dryden's F-15 Highly Integrated Digital Electronic Control research aircraft. Dryden is using the STOL/MTD initially in the Advanced Control Technology for Integrated Vehicles (ACTIVE) program that is investigating improvements in cruise speeds and trim drag reduction during cruise flights or maneuvers. The first phase of the ACTIVE program began in late 1993 and is concentrating on parameter identification and system optimization and integration efforts. The F-15 STOL is on loan from the U.S. Air Force.