Event:
27 lost at sea when 2 U.S. Navy anti-submarine planes collide
More Notable Events on March 21:
1985 Arthur Ashe is named to International Tennis Hall of Fame
1984 Part of Central Park is named Strawberry Fields honoring John Lennon
1979 Egyptian Parliament unanimously approve peace treaty with Israel
1963 Alcatraz federal penitentiary in San Francisco Bay closed
1851 Yosemite Valley discovered in California
