National Archives and Records Administration
1950: Puerto Rican nationalists Griselio Torresola and Oscar Collazo attempt to assassinate U.S. President Harry S. Truman at Blair House, the official state guest house for the president, which was serving as Truman's home while the White House was being renovated. On the street outside the residence, Torresola mortally wounded White House policeman Leslie Coffelt, who returned fire before dying and killed Torresola. Collazo, as a co-conspirator in a felony that turned into a homicide, would be found guilty of murder and sentenced to death in 1952. Truman, who was taking a nap upstairs in Blair House during the shooting, would later commute his sentence to life in prison.