Nov. 22, 1963. 11:45 a.m. President Kennedy, First Lady Jackie Kennedy, Secret Service agent Bill Greer (driver), agent Roy Kellerman (passenger seat), Texas Gov. John Connally, and his wife Nellie are en route to a Dallas "Trade Mart," where President Kennedy is scheduled to deliver a luncheon address. | (CORBIS)

12:30 p.m. Shots are fired. Jackie Kennedy later described this harrowing moment: "I remember falling on him and saying ... 'Oh, my God, they have shot my husband.' And 'I love you, Jack.' I remember I was shouting." | (Bettmann/CORBIS)

12:30 p.m. "People could be seen diving for the ground, some protecting their children with their bodies," reported Robert Baskin, Washington bureau chief of The Dallas Morning News. | (CORBIS)

Shortly after 12:40 p.m. Crowds begin to gather outside Parkland Hospital, where the president was taken. | (Bettmann/CORBIS)

1:22 p.m. Police recover Lee Harvey Oswald's rifle. | (AP Photo)

1:31 p.m. Assistant press secretary Malcolm Kilduff announces Kennedy's death to the press at Dallas police headquarters. | (CORBIS)

1:45 p.m. Lee Harvey Oswald is apprehended after a concession stand worker, Warren Burroughs, sees the suspect run into the Texas Theatre in Oak Cliff without buying a ticket. | (AP Photo)

2:38 p.m. Vice President Lyndon Johnson takes the oath of office aboard Air Force One as Jackie Kennedy and Johnson's wife, Lady Bird, watch. | (CORBIS)

Afternoon. Attorney General Robert F. Kennedy is comforted by two of his children after being notified of the assassination of his brother. | (Bettmann/CORBIS)

5:00 p.m. Air Force One arrives at Andrews Air Force Base near Washington, D.C. Jackie Kennedy, still wearing her blood-splattered skirt suit, and Robert Kennedy walk behind the ambulance as workers load the coffin inside. | (AP Photo)

Nov. 24, 1963. 11:21 a.m. Dallas night club owner Jack Ruby fatally shoots Oswald from point-blank range in a corridor of Dallas police headquarters. | (AP Photo/Dallas Times-Herald, Bob Jackson)

Nov. 25, 1963. Three-year-old John F. Kennedy, Jr. salutes his father's casket. Jackie, center, and daughter Caroline are accompanied by the late president's brothers Sen. Edward Kennedy, left, and Robert Kennedy. | (AP Photo)

Nov. 25, 1963. Soldiers drape a flag over the casket of President John F. Kennedy in front of a crowd of mourners at Arlington National Cemetery. | (CORBIS)