President John F. Kennedy greets supporters during his visit to Fort Worth, Texas, on Friday, November 22, 1963. This year marks 51 years since his assassination in Dallas, an event that jarred the nation and fueled a multitude of conspiracy theories about whether Kennedy was killed by a single gunman acting alone in the Texas School Book Depository. Here are some images from that fateful day as it unfolded. 
First lady Jacqueline Kennedy at a breakfast held by the Chamber of Commerce in Fort Worth with Vice President Lyndon B. Johnson, left, and Kennedy. 
The Kennedys arrive at Love Field in Dallas on a trip to advance the upcoming 1964 campaign. 
About 11:45 a.m., Texas Gov. John B. Connally Jr., waving to the crowd, and the Kennedys depart Love Field for a 10-mile tour of Dallas. The President asked about the weather earlier in the day and opted not to have a top on the limousine. 
The Kennedys and Connallys leave Love Field with Secret Service Agent Bill Greer driving the presidential limousine. The motorcade is on the way to the Trade Mart, where Kennedy is to speak at a sold-out luncheon. 
Crowds line the street as Kennedy's motorcade heads toward downtown Dallas. A group of White House staffers follows the motorcade in a bus several vehicles behind the presidential limousine. 
Dallas Police Officer Bobby Hargis, background, is one of four motorcycle officers assigned to Kennedy's car, which reaches Houston Street shortly before 12:30 p.m. "I thought, 'Well, we've got it made now,' " Hargis said. "And then bam! It happens." 
Kennedy is seen approximately one minute before he is shot. 
Seen through the limousine's windshield as it proceeds along Elm Street past the Texas School Book Depository, Kennedy appears to raise his hand toward his head after being shot. The first lady holds Kennedy's forearm in an effort to aid him. 
Kennedy slumps against his wife as the bullet strikes him in the head. Connally, who is wounded in the attack, begins to turn around just to the left of Jackie Kennedy. 
Kennedy slumps in the back seat of the car and his wife leans over to him as Secret Service Agent Clinton Hill rides on the back of the car. 
The limousine carrying the mortally wounded President races toward the hospital seconds after three shots are fired. Two bullets hit Kennedy and one hit Connally. Hill rides on the back of the car as the wives cover their stricken husbands. 
The limousine speeds along Elm Street toward the Stemmons Freeway overpass moments after shots are fired at Dealey Plaza. 
Photographers are seen running shortly after the shooting. 
Hurchel Jacks, Vice President Johnson's driver in the motorcade, listens with others to news accounts on the car radio outside the Parkland Hospital emergency entrance. After the shots were fired, Jacks had rerouted the vice president's car to safety. The ABC radio network broadcast the first nationwide news bulletin reporting that shots have been fired at the Kennedy motorcade. 
Before 1 p.m., Dr. Tom Shires, with Parkland public relations director Steve Landregan, rear, describes the President's wounds to the press. Four doctors worked on the stricken Kennedy in the emergency room. 
American broadcast journalist and anchorman Walter Cronkite removes his glasses and prepares to announce Kennedy's death. CBS broadcast the first nationwide TV news bulletin reporting on the shooting. 
A photographer captures a New Yorker's expression of shock upon hearing the news. At 1 p.m. the 46-year-old President of the United States is declared dead, becoming the fourth U.S. president killed in office. 
After 2 p.m., Jacqueline Kennedy leaves Parkland Hospital with her slain husband's body. She would ride in the back with the bronze casket. "I had a feeling that if somebody had literally fired a pistol in front of her face that she would just have blinked," said Dallas Police Officer James Jennings, who helped put the casket in the hearse. 
The hearse carrying Kennedy's body pulls away from Parkland Hospital en route to the airport. 
Lee Harvey Oswald, a 24-year-old ex-Marine, is arrested in the back of a movie theater where he fled after shooting Dallas Police Patrolman J.D. Tippit. That incident occurred approximately 45 minutes after the assassination. 
Vice President Lyndon Johnson takes the oath of office to become the 36th president of the United States. He is sworn in by U.S. Federal Judge Sarah T. Hughes, left, with Jacqueline Kennedy by his side on Air Force One. 
The casket containing the body of President Kennedy is moved to a Navy ambulance from the presidential plane. Jacqueline Kennedy and Attorney General Robert Kennedy stand behind on the elevator. 
Jacqueline and Robert Kennedy get into the Navy ambulance with the president's body at Andrews Air Force Base, just outside Washington. The body of the president is taken to Bethesda Naval Hospital for an immediate autopsy. 
Police mug shot of Lee Harvey Oswald. He is arraigned in the slaying of Officer Tippit on November 22 and/or the murder of the president the next day. As Oswald is being transferred from the Dallas city jail to the county jail, nightclub owner Jack Ruby shoots and kills him, an event captured live on TV. Ruby is arrested immediately. 
A man holds up a copy of the New York World-Telegram featuring the news of the assassination. Major television and radio networks devote continuous news coverage to the events of the day, canceling all entertainment and all commercials. Many theaters, stores and businesses, including stock exchanges and government offices, are closed. 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
- President John F. Kennedy was assassinated on November 22, 1963
- His assassin, Lee Harvey Oswald, was shot and killed while in police custody
- Investigations over the decades revealed countless facts -- and new questions about the case
Join CNN Thursdays at 9 p.m. ET for as we examine a decade that changed a nation. Discover your '60s personality by taking the CNN Sixties quiz.
(CNN) -- This year will mark 51 years since President John F. Kennedy was assassinated in Dallas on November 22, 1963. Whether you were alive at the time or not, you probably know that Lee Harvey Oswald killed the President, only to be fatally gunned down by Jack Ruby two days later.
You probably also know there are hundreds of conspiracy theories about who was behind the assassination, and whether Oswald was the lone gunman or if there was another shooter on the infamous grassy knoll.
Here are five things you may not know about the assassination of the 35th president of the United States:
1. Oswald wasn't arrested for JFK killing
Lee Harvey Oswald was actually arrested for fatally shooting a police officer, Dallas patrolman J.D. Tippitt, 45 minutes after killing Kennedy. He denied killing either one and, as he was being transferred to county jail two days later, he was shot and killed by Dallas nightclub operator Jack Ruby.
2. Assassinating the president wasn't a federal crime in 1963
Despite the assassinations of three U.S. presidents -- Abraham Lincoln, James Garfield and William McKinley -- killing or attempting to harm a president wasn't a federal offense until 1965, two years after Kennedy's death.
3. TV networks suspended shows for four days
On November 22, 1963, at 12:40 p.m. CST -- just 10 minutes after President Kennedy was shot -- CBS broadcast the first nationwide TV news bulletin on the shooting. After that, all three television networks -- CBS, NBC, and ABC -- interrupted their regular programming to cover the assassination for four straight days. The JFK assassination was the longest uninterrupted news event on television until the coverage of the September 11 attacks in 2001.
4. It led to the first and only time a woman swore in a U.S. president
Hours after the assassination, Vice President Lyndon Johnson was sworn in as president aboard Air Force One, with Jacqueline Kennedy at his side, an event captured in an iconic photograph. Federal Judge Sarah Hughes administered the oath, the only woman ever to do so.
5. Oswald had tried to assassinate Kennedy foe
Eight months before Oswald assassinated JFK, he tried to kill an outspoken anti-communist, former U.S. Army Gen. Edwin Walker. After his resignation from the U.S. Army in 1961, Walker became an outspoken critic of the Kennedy administration and actively opposed the move to racially integrate schools in the South. The Warren Commission, charged with investigating Kennedy's 1963 assassination, found that Oswald had tried to shoot and kill Walker while the retired general was inside his home. Walker suffered minor injuries from bullet fragments.
