For over five decades, the Russian MiG aircraft has been American airpower's fiercest rival, taking on U.S. fighter jets in Korea, Vietnam, and Iraq. But it first took flight against a common enemy: Nazi Germany. Follow the evolution of this quick, durable, and powerful menace in the skies, from its shaky start in the Second World War to its recent and deadly incarnations. See how its ongoing battle with the U.S. for air superiority has compelled both nations to develop better tactics, training, and aircraft.