Marvel’s “Captain America: The Winter Soldier” premiered in Los Angeles.
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Bill Gates left the Microsoft board after founding the company four decades prior.
Prolific killer John Wayne Gacy was given the death sentence for the murder of 33 young men and boys.
The first major revolt of the 1848-1849 German revolutions began in Vienna.
The US army enlisted its first female colonel, Julia Flikke.
Apollo 9 and its crew returned to Earth after a 10-day mission orbiting Earth.
