A revelation of the secret behind the USAF's classified TR-3B and history of the aerospace crafts that utilize mercury for propulsion without external exhaust, "AEROSPACE: Declassified Vol. 3 - The Spark of Truth, A Jolt Forward" examines further the secret of the electromagnetic and electrogravitic propulsion systems in their modern application of aerospace craft that do not rely on wings, jets, propellors or any previoulsy known requirements for flight.
This book was drawn from the same source material
as the author's previous books "Electrogravitics" and "EM UFO Systems" with more emphasis on the practical applications of the revealed technology.
http://www.FortuneAerospace.com/