While any unidentified flying object loosely qualifies as a UFO, some are more mysterious than others--and more likely to have extraterrestrial origins. Among the most persuasive cases: the Texas Airship mystery, when a craft metallic and...tremendous in size appeared; the abduction of an entire combat unit at Gallipoli; and, of course, the infamous Roswell crash. Also takes on the issues of possible governmental cover-ups...and the legendary men...