Gary is an aerospace systems engineer with Wisk Aero, formerly with Collins, United Technologies, Linquest, Boeing, ITT, and Hughes Aircraft Company.

Gary has had a deep interest in gravity modification and advanced propulsion for decades, and has published numerous scientific articles on various topics, especially related to the detection & generation of High-Frequency Gravitational Waves.

Stephenson is also a well-established contributor to many authoritative scientific papers by other researchers, and is a past participant in notable advanced propulsion conference such as the 2003 Mitre HFGW and 2005-2008 INPS STAIF (Section-F) conference events.