The SR71 "Blackbird" was a beautiful aircraft indeed, i'm sure i read somewhere that it glowed red in flight which is pretty impressive considering the altitude it flew at and the air being so thin. I'm also sure that since it was retired the USAF had a pretty good replacement, and it would not surprise me at all if these new craft have been mistaken for UFO's. Ive seen on the TV something about mysterious high flying aircraft that leave a Con trail that looks like someone blew smoke rings (Some type of pulse or ram jet i guess), i also wonder just what else is being created in the so called Black projects?..