Spies Helped the USAF Shoot Down a Third of North Vietnam’s MiG-21s

This story originally appeared on Dec. 30, 2014. On Jan. 2, 1967, around 30 U.S. Air Force F-4 Phantom fighter jets flying from Ubon in Thailand shot down a full third of North Vietnam’s MiG-21s—for a loss of just one of their own. It was a strategic victory in an...