Edgar Rothshild Fouche is a UFO researcher who publishes a lot on ARVs, and propulsion etc.
Nowadays he runs his own media company, called Fouche Media. Before that, however, he was involved with the Department of Defense in one way or another for over 25 years.
He filled positions as Major Command Liaison, Headquarters manager, and DoD factory representative for TAC, SAC, ATC, and PACAF following the Vietnam war. Later in his career, as a manager of defense contractors, he dealt with classified "black" programs developing state-of-the-art Electronics, Avionics, and Automatic Test Equipment..
He was considered an Air Force expert with classified electronics counter-measures test equipment, crypto-logical equipment owned by the National Security Agency, and Automatic Test Equipment. He worked with many of the leading military aircraft and electronics manufacturers in the US.
He participated as a key member in design, development, production, and Flight-Operational-Test and Evaluation in classified Aircraft development programs, state-of-the-art avionics, including electronic countermeasures, satellite communications, crypto-logical and support equipment.
He claims that a lot of the triangular UFOs sightings are actually sightings of a super secret USAF craft, called the 'black manta' (TR-3, of which two versions would exist, a TR-3A and a TR-3B, that look completely different. They only use the same technology).
http://www.pastpresentfuture.info/alien_ufo_secret_fouche_tr3b.html is one article dedicated to the black manta.
He is the author of the (fiction) novel "Alien Rapture," which - while being a work of fiction - is based on his experiences, as well as on the experiences of some of his friends.
Relevant: URLs: Edgar Rothshild Fouche, "Presentation for UFO Congress," http://www.ufomind.com/misc/1998/aug/d26-001.shtml