his disregard for orders, and his disturbing success rate on missions, resulting in the kidnapping of Webb's brother, U.S. Army Lieutenant Gordon Webb, during his tour of duty in Saigon. During the mission to save Gordon Webb, an original "Medusa" team member named Jason Charles Bourne was discovered to be a double agent who alerted a large number of North Vietnamese soldiers to their whereabouts. When Delta found Bourne after killing his way through the North Vietnamese, he simply killed Bourne in the jungles of Tam Quan. Bourne's execution was never exposed due to the top secret status of Medusa. Operation Treadstone Years later, a black ops arm of the CIA, called "Treadstone Seventy-One" after a building on New York's Seventy-First Street, was formed to eliminate the notorious Carlos the Jackal. Webb was called up by David Abbott, nicknamed "The Monk", to be its principal agent. At this point, Webb (Delta) takes the identity of Jason Bourne, due to the actual Bourne's status as MIA in the war, as well as the fact that Bourne was in reality a brutal killer with a long criminal record. The point was to turn "Jason Bourne" into an elite, ruthlessly efficient assassin who would be feared by terrorists and criminals worldwide. The assassin's alias was "Cain". The reasoning for creating such a myth was to create competition for the well-known assassin named "Carlos", or "Carlos the Jackal" (real name Ilich Ramírez Sánchez) who at that time was considered the world's best and most famous assassin. By creating this myth, Cain was to drive the reclusive Carlos out into the open "long enough to put a bullet in his head". Film backstory In the film series, Jason Bourne is revealed to have been born David Webb on September 13, 1970 (or June 4, 1978 in Jason Bourne) in Nixa, Missouri (although in Ultimatum, he is given a false date of April 15, 1971, as a coded reference to a specific site). In flashbacks, he joins the United States Army and is eventually selected for CIA Treadstone program in 1997. His father, Richard Webb, a senior CIA analyst, is responsible for creating the Treadstone, a black ops project intended to train and deploy elite assassins. The CIA murders his father with a false flag car bomb in Beirut in a bid to recruit Webb. The ploy is shown to have worked; Webb approaches the CIA