Cold War Files: All Units: Events: Operation Bolo Devastates North Vietnamese MiG-21 Supply

Operation Bolo occurs as 28 U.S. Air Force F-4 Phantom jets lure North Vietnamese MiG-21 interceptors into a dogfight over Hanoi and shoot down seven of them. This leaves only nine MiG-21s operational for the North Vietnamese. American pilots, however, are prohibited by Washington from attacking MiG air bases in North Vietnam.