WASHINGTON - Long the domain of science fiction and so-called ufologists, the subject of UFOs has in recent years drawn serious study from the Pentagon and intelligence agencies.
The prospect of an adversary spying with unknown technology has alarmed lawmakers in both parties.Congress last year required the creation of the report delivered Friday.
While its lack of conclusions has already been made public, the report still represents a milestone in the study of the issue.U.S.
officials who briefed reporters on condition of anonymity said there were "no clear indications" that the sightings could be linked to alien life.