Boyd Bushman is a retired senior research engineer who worked for Lockheed Martin, Texas Instruments and Hughes Aircraft. Regarded as one of the inventors of the Stinger missile. He has claimed that Lockheed Martin has researched antigravity technology, specifically gravity manipulation by means of magnetic fields, he even has stated that he experimented at Lockheed Martin's Fort Worth, Texas facilities, proving that magnetic fields affect the gravitational field and because of that, bodies don't fall with the same acceleration, a result different from the classical experiments made by Galileo with no magnetic fields present. - Wikipedia
Boyd Bushman, who worked for Lockheed, Hughes and General Dynamics is one who has made many energy and propulsion breakthroughs in his career (he holds 26 patents). He invented a laser that dissociates air to produce propulsion (US Patent 5,542,247 and 5,680,135) and also has found a way to achieve flight using standing wave acoustics (Patent 5,511,044). Boyd was featured on the two-hour Discovery Channel special, "The Billion Dollar Secret" with journalist, Nick Cook, the author of The Hunt for Zero Point.