https://patents.google.com/patent/US10144532B2/en

https://archive.org/details/US20060145019A1/mode/2up

https://www.bitchute.com/video/obUZ1jScpv4K/

https://www.military.com/video/aircraft/military-aircraft/tr-3b-aurora-anti-gravity-spacecrafts/2860314511001

http://www.antigravitytechnology.net/john_hutchison.html