The Mikoyan-Gurevich MiG-19 is a Soviet second generation, single-seat, twin jet-engined fighter aircraft. It was the first Soviet production aircraft capable of supersonic speeds in level flight. A comparable U.S. "Century Series" fighter was the North American F-100 Super Sabre, although the MiG-19 would primarily oppose the more modern McDonnell Douglas F-4 Phantom II and Republic F-105 Thunderchief over North Vietnam.