Overview: The skies over Vietnam. They fight in a supersonic world, where split second decisions determine if they live - or die. American F4 Phantom pilots Fred Olmsted and Dan Cherry take on the famed MiG-21 - the most feared threat in the sky. And one American, Steve Ritchie, becomes a dog fighting legend as an Air Force Ace. You're in the cockpit with some of the fiercest dogfighting ever seen in Vietnam!