March 27, 1998
The. U.S. Food and Drug Administration approves use of the drug Viagra, an oral medication that treats impotence.
March 29, 1973
Two months after the signing of the Vietnam Peace Pacts, the United States officially withdraws from Vietnam.
March 30, 1981
President Ronald Reagan is shot in the chest outside a Washington, D.C., hotel by a deranged drifter named John Hinckley Jr.