Australian Associated Press
Two top US defence intelligence officials are due to testify on Capitol Hill about what the government knows of unidentified flying objects, in the first public congressional hearing concerning UFOs in more than 50 years.Tuesday's hearing before a US House Intelligence subcommittee comes 11 months after a report documenting more than 140 cases of what the government officially calls "unidentified aerial phenomena," or UAPs, that US military pilots have reported observing since 2004.