Local businessman Jack Ruby, foreground, approaches and fires a gun at Lee Harvey Oswald, center, in handcuffs, as he is escorted to the Dallas city jail via the underground garage of the Dallas police headquarters on Nov. 24. Oswald is escorted by detectives Jim Leavelle, left, who is handcuffed to Oswald, and L.C. Graves, right. Oswald later dies at a hospital. (Dallas Morning News, Jack Beers)
Jack Ruby, foreground, approaches and shoots Lee Harvey Oswald, center in handcuffs, as he is escorted to the Dallas city jail via the underground garage of the Dallas police headquarters, Texas, on November 24, 1963. Oswald is escorted by detectives Jim Leavelle, left, who is handcuffed to Oswald, and L.C. Graves, right. Directly behind Graves is detective L.D. Montgomery. (Dallas Morning News, Jack Beers)
In this file photo, Lee Harvey Oswald is shown with rifle a in the backyard of the Oak Cliff area apartment in a 1963 file photo in Dallas, Texas.
In this Sunday, Nov. 24, 1963 file photo, Lee Harvey Oswald, accused assassin of President John F. Kennedy, is placed on a stretcher after being shot in the stomach in Dallas. Nightclub owner Jack Ruby shot and killed Oswald as the prisoner was being transferred through the underground garage of Dallas police headquarters. (AP Photo/David F. Smith)
In this file photo, Jack Ruby talks to a reporter while being returned to jail after a psychiatric examination in Dallas. As Lee Harvey Oswald was being transferred from police headquarters to the county jail on Nov. 24, 1963, Ruby shot him in the chest from close range. Ruby was convicted of murder and sentenced to death. He appealed and was granted a new trial, but died of lung cancer before a trial date was set. (AP Photo/Ferd Kaufman)
In this Nov. 24, 1963 file photo, Jacqueline Kennedy kisses the casket of her husband, President John F. Kennedy, in the rotunda of the U.S. Capitol in Washington, accompanied by their daughter Caroline, kneeling alongside. (AP Photo)
The caisson bearing the flag-draped coffin of President John F. Kennedy, is shown leaving the White House in procession down Pennsylvania Avenue, in Washington, en route to Arlington National Cemetery, November 25, 1963. (AP Photo)