I don't know about you guys, but my gut feeling is that this plane does exist and has for a decade.
However, as a firm believer in Hypersonic Transportation, I don't think it carries any weapons -- cuz there no room.
Futhermore, as a firm believer of UFO's, I don't think it has any UFO-related technology on board either.
Hands down, it is just short of a Holy Grail! If only it could go to orbit...