I have witnessed with other reliable witnesses two huge triangular UFO over Clearwater about a half mile up traveling over 600 mph and making left angle turn before disappearing.  Many other sightings - verified - in my book, "Star Voyage" on Amazon Books.  I have personally witnessed over two dozen UFO sightings that were very unusual.  Most unusual was a sighting in May, 1970 when a blimp-like UFO with under-carriage, copper color with scorch marks - no wings - no numbers or ID - less than a half mile up over State University of New York at Albany.  That was witnessed by me and about 40 other people.  Later found another witness who said it was strobbing white lights on ground, turned upward in place at 45 degree angle and shot out of sight in about two seconds.  Needless to say, the witness was very shaken by that event because he was not a believer in UFOs.  Now he is a believer and witness!

Roy Bliven, Author