 The regiment was established at Yen Bai, and by April 1969, nine combat-rated MiG-19 pilots were posted for combat duty.While some of North Vietnam's MiG-17s and all of their MiG-21s were supplied by the Soviet Union, the MiG-19s (J-6 models) were supplied by the PRC, which seldom exceeded 54 MiG-19s in number.The first use and loss of a U.S. fighter to a MiG-19 (J-6) was in 1965 when a USAF Lockheed F-104 Starfighter piloted by Captain Philip E. Smith was attacked by a PLAAF aircraft over Hainan Island.