A US Army crew, flying a modified Vertol H-21 Shawnee nicknamed Amblin-Annie, makes the first nonstop helicopter flight across the United States. The flight from San Diego to Washington, D.C., takes 31 hours and 40 minutes, covers 2,610 miles, and requires six air refuelings.
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.
