>>13143515Experimental aircraft. Every halfway "credible" UFO sighting always aligns with the development of a new advanced experimental aircraft. SR-71 Blackbird, B-2 Stealth Bomber, V/STOL planes like the Harrier, so-called "stealth helicopters," every single one lines up with the popular depictions of UFOs during their experimental phases and fits perfectly a panicked yuppy's half-remembered split second glance of one.