The military deleted a passage about unidentified flying objects from a 2008 Air Force personnel manual just days after The Huffington Post asked Pentagon officials about the purpose of the UFO section.
Before the recent revisions, the document -- Air Force Instruction 10-206 -- advised pilots, radar operators and other Air Force personnel on what to do when they encountered any unknown airborne objects. Now in the 2011 version, the reference to UFOs -- which simply means "unidentified flying objects," not necessarily spaceships with little green men -- has been eliminated.