A flight of Air Force F-4C Phantoms is attacked by three MiG-17s in the first air-to-air combat of the war over North Vietnam. The MiGs make unsuccessful passes before fleeing to the sanctuary of the Communist capital area.
Small satellites meant to improve the way the U.S. measures Earth’s magnetic field—an option to expand the military’s position, navigation, and timing enterprise—launched March 30 from Vandenberg Space Force Base, Calif.
