Selected by NASA in May 1984, Hammond became an astronaut in June 1985 and qualified for assignment as a pilot/commander on Space Shuttle flight crews. His technical assignments included serving in Mission Control as an ascent/entry spacecraft communicator. In that capacity he was directly involved in the decision-making process for flight rules, procedures, techniques, and launch commit criteria. He was also assigned as an Astronaut Support Person, or "Cape Crusader," responsible for monitoring Orbiter status as it undergoes testing and maintenance at John F. Kennedy Space Center during preparations for the next flight. Hammond also served as the lead astronaut supporting the Shuttle Avionics Integration Laboratory which tests and verifies the flight software for each Shuttle mission. Hammond was the lead astronaut supporting Orbiter software development and changes, including the Global Positioning System avionics upgrade. He also worked on designing new cockpit flight instruments/systems displays for the Multifunctional Electronic Display System, a major cockpit upgrade to electronic display systems. A veteran of two space flights, Hammond logged over 462 hours in space. He flew on STS-39 in 1991, and STS-64 in 1994. Following STS-64, Hammond completed 5 months of intensive Russian language training as preparation for assignment as the Deputy for Operations, Russia. That assignment was subsequently changed to NASA Liaison to USAF HQ/AFSPC, Colorado Springs, where he worked several issues to strengthen ties between NASA, AFSPC, and USAF Astronauts. Hammond was also assigned as Lead Ascent/Entry CAPCOM for missions STS-73 through STS-78. During the same period, Hammond served as the Branch Chief of the Flight Support Branch, supervising CAPCOM and ASP activities. Hammond last assignment at NASA was as the Branch Chief of the Astronaut Office Safety Branch where he monitored all T-38, Shuttle, and Space Station safety issues.
Spaceflight experience
Hammond flew as pilot of Discovery on STS-39, the first unclassified Department of Defense mission. He logged 199 hours and 23 minutes of space flight. The seven-man crew performed numerous scientific experiments to collect data on atmosphericinfrared and ultraviolet phenomena including a deploy and rendezvous in support of the Strategic Defense Initiative Office. He was the pilot on STS-64 aboard the Discovery. Mission highlights included: first use of lasers for environmental research; deployment and retrieval of a solar science satellite; robotic processing of semiconductors; use of RMS boom for jet thruster research; first untethered spacewalk in 10 years to test a self-rescue jetpack. Mission duration was 10 days, 22 hours, 51 minutes.
Aviation career
Today he resides in Tustin, California as a test pilot for Gulfstream Aerospace with wife Kathy. His son Michael Blaine was born on June 20, 1987 and currently lives in Houston, Texas.