McCandlish, Mark
TL;DR
Mark McCandlish leaked to the world the existence of the "Alien Reproduction Vehicle aka Fluxliner" back in 1988, in 2001 at the Disclosure Project Press Club Briefing, and in several interviews and documentaries. He created a line drawing with all the witnessed components of the ARV which included what appeared to be a slightly asymmetrical parallel plate capacitor array on the bottom of the craft tying it's propulsion system to the Biefeld-Brown effect and an electromagnetic coil around the circumference of the craft which was used for inertia reduction enabling extremely high acceleration.
History
Mark McCandlish went to school
Mark McCandlish was supposed to attend an air show with a friend named "Brad" and a high ranking DoD official that was a client of Brad's. Mark had to back out at the last minute due to a request by Popular Science for cover art. Brad ended up seeing Mark learned of the existence of the "Alien Reproduction Vehicle aka Fluxliner" from a friend named "Brad" in 1988 who he was supposed to attend an air show with but had to back out due to a last minute job for cover art for Popular Science and leaked it to the world. From Brad's description he was able to create a line drawing that he has released to the public