In Oregon, a man said his health deteriorated after a glowing blue orb passed through his body. A family in California reported strange lights and a gray figure with spindly legs in their orchard. A werewolf-like creature allegedly prowled around homes in suburban Virginia. All three incidents were probed as part of a secret Pentagon program investigating UFOs. The program, contracted by the Defense Intelligence Agency, plumbed the connection between the flying objects and the paranormal for two years, according to the men who ran it. It was the beginning of a years-long effort by UFO advocates that eventually led...