User blog comment:Crazy sam10/Call of Duty: Ghosts Teaser Trailer released/@comment-66.188.133.211-20130508044546

Breaking news. The titles 'Ghosts' does not refer to the dudes with Ghost masks, instead it refers to the enemy, who will be actual ghosts. The U.S. must team up with the Ghostbusters and Luigi to destroy this incoporeal threat.

Sources: My ass