Results: Four U.S. Presidents have been assassinated while in office and many more have faced serious attempts on their lives. Chances are, you can name at least one President who met this fate, but can you name them all?

It was April 15, 1865, and the Civil War had officially ended just five days earlier. President Abraham Lincoln and his wife were attending Ford's Theater that evening to watch the play "Our American Cousin" when John Wilkes Booth shot him in the back of the head. Lincoln, fatally wounded, was taken across the street to Petersen House, where he died at 7:22 the next morning. Booth, a failed actor and Confederate sympathizer, held the Republican Party responsible for the downfall of southern states wealth and status. He escaped and managed to elude capture for nearly two weeks. On April 26, after being cornered in a barn outside the hamlet of Port Royal, Virginia, Booth was shot and killed by U.S. Army troops after refusing to surrender. Did you know Booth had hatched several plans of kidnapping the President. His original plan was to exchange the Confederate prisoners for the President?

President James Garfield was victim of an assassin, Charles Guiteau, a mentally disturbed man who had stalked Garfield for weeks in a deluded attempt to secure federal employment. On July 2, 1881 he shot President Garfield on the platform of a Washington D.C. train station as Garfield was preparing to board a train. He was arrested immediately after shooting the president. After a swift trial, Guiteau was executed by hanging on June 30, 1882. Lacking antibiotics and an understanding of modern ​hygienic practices, doctors repeatedly probed the entry wound on Garfield's lower back in the days and weeks after the assassination in an unsuccessful attempt to find the two bullets. Did you know the President lingered for more than two months before finally dying?

President William McKinley was greeting visitors at the Pan-American Exposition in Buffalo, N.Y., on September 6, 1901, when Leon Czolgosz stepped out of the crowd, drew a gun, and shot McKinley twice in the abdomen at point-blank range. Czolgosz, a self-proclaimed anarchist, was attacked by others in the crowd and may have been killed had he not been rescued by police. He was jailed, tried, and found guilty on September 24. He was executed by electric chair on October 29. His last words, according to reporters who witnessed the event, were, "I am not sorry for my crime. I am sorry I could not see my father." The bullets didn't immediately kill McKinley. President McKinley lived another eight days, succumbing to gangrene caused by the wound. Did you know that following the death of William McKinley, Congress directed the Secret Service to assume full-time security for the President, a role the federal agency still fills today.?

President John F. Kennedy was assassinated on November 22, 1963, as he drove past crowds of onlookers that lined the streets of downtown Dallas during his motorcade from the airport. Kennedy was struck once in the neck and once in the back of the head, killing him instantly as he sat beside his wife Jackie. Kennedy's assassination was the first in the era of modern communications. News of his shooting dominated TV and radio for weeks after he was shot. Just two days after Kennedy was killed, Oswald himself was shot to death on live television as he was in police custody. Oswald's killer Jack Ruby died in prison on January 3, 1967. The Warren Commission presented to President Johnson on September 24, 1964, its 888-page report. They concluded that Oswald was a "lone gunman". In the late 1970s, the U.S. House of Representatives Select Committee on Assassinations (HSCA) launched a new investigation into Kennedy's death. In its final report, issued in 1979, the HSCA agreed with the Warren Commission's findings. It is very controversial, new technologies question the findings. Do you believe the Warren Commission came to the correct conclusion?

Giuseppe Zangara attempted to kill President Franklin Roosevelt on Feb. 15, 1933, just as the President wrapped up a speech in Miami's Bayfront Park. A total of five people were hit by the hail of bullets. Rumors ran rampant for a while that the actual target was Chicago Mayor Anton J. Cermak, who was in attendance, sustained a bullet wound and eventually died. Zangara confessed and was sentenced to 80 years in prison. Did you know Zangara died of peritonitis on March 6, 1933?

"Honey, I forgot to duck." That's what President Ronald Reagan told his wife Nancy as he was being wheeled into an operating room. John Hinckley, Jr. shot Reagan as well as then-White House Press Secretary James Brady, a police officer and a secret service agent, outside the Washington Hilton hotel in Washington, D.C. on March 30, 1981. Hinckley wanted to impress actress Jodie Foster. Reagan was shot in the chest and suffered a punctured lung, but he survived. Hinckley was found not guilty by reason of insanity. Did you know he was released from a psychiatric hospital in 2016?