Advanced Propulsion Concepts

https://www.silverhawkauthor.com/post/stanton-friedman-ufo-exhibit-fredericton-region-museum-frm-

Stanton+T.+Friedman (STF) on UFO PROPULSION SYSTEMS http://www.stantonfriedman.com/index.php?ptp=articles&fdt=2009.02.03 , http://www.stantonfriedman.com/index.php?ptp=stans_bio

https://documents2.theblackvault.com/casefiles/matthewriot/ufosmythandmystery-friedman.pdf

Stanton T. Friedman didn't believe that Bob Lazar worked on secret technology projects.

Bob Lazar describes alien technology housed at secret S-4 base in Nevada -- Part 5 https://www.youtube.com/watch?v=4UjqFaQq_7I

Nevertheless, Bob Lazar has his own interesting take on things.

https://www.thedrive.com/the-war-zone/30499/the-truth-is-the-military-has-been-researching-anti-gravity-for-nearly-70-years

https://ntrs.nasa.gov/api/citations/19800010907/downloads/19800010907.pdf

Reverse Engineering a UFO | National Geographic https://www.youtube.com/watch?v=_WGAIbTx13I

https://en.wikipedia.org/wiki/United_States_gravity_control_propulsion_research#Evidence_of_existence

https://futurism.com/could-humans-ever-really-reach-alien-stars

 https://thedigitallabyrinth.blogspot.com/search?q=Advanced+Propulsion+Concepts