In an early scene of the Parkland medical lounge area, supposedly well before the assassination takes place, a television can be seen with an image of a woman modeling a jacket and boots. The footage on the television is actual footage from the broadcast that was taking place on Dallas TV station WFAA, approximately 30 seconds before a reporter interrupts with news of the assassination.
When nurse Nelson begins treating Oswald, blood smudges are on her left cheek. In subsequent shots the smudges are gone.
The 1964 Cadillac hearse used in the movie does not have chrome crosses on both sides of the back, like the real-life hearse.
A title card at the end of the movie says that Agent Forrest Sorrels died in 1993, at age 82. He was actually 92. During his testimony before the Warren Commission in 1964, he said he was 63, making his birth year 1901. He began his 47-year government career in 1922, when he was 21.
The Zapruder film is mentioned as being a 'new' format. The film depicted is Kodak's standard 8mm, introduced in 1932. A new 'Super 8' format was introduced in 1965. Kodak's Kodachrome film had processing included in the price, so that the film would only be processed in a Kodak laboratory. Other film processing laboratories usually wouldn't stock the propriety chemicals used to develop Kodachrome film because customers wouldn't be expected to pay for processing twice.
George Burkley, the President's physician, wears the uniform of a full admiral. Burkley was a rear admiral and was in civilian clothes on the day of the assassination.
Marilyn Sitzman stands next to the concrete pedestal Zarpuder is standing on. In reality she stood on it with him to hold on to him, at his request, because he suffered from vertigo.
In the film, Kennedy's body is wheeled into the hospital with the head and upper body exposed. Secret Service agent Clint Hill draped his suit coat over Kennedy's body before it was moved to prevent anyone from seeing the President's wounds.
Some of the award ribbons on the uniforms of the Air Force officers helping to load the casket onto Air Force One are non-existent in the real Air Force. In addition, of the ribbons on their uniforms that do actually exist, several are not worn in the correct order of precedence.
Throughout the film, Secret Service agents carry M16A1 rifles, with a birdcage flash hider and forward assist. That model was not available in 1963. At the time, the Secret Service used the original-model M16, with a three-prong flash suppressor and no forward assist.
A 1965 Cadillac Hearse is at Lee Harvey Oswald's funeral.
During the resuscitation of Oswald, Nurse Nelson uses a cardiology stethoscope in several shots. Cardiology stethoscopes did not exist in 1963.
The Kodak logo on the 16mm film box was not used until at least 1971.
The Tektronix scope used in the operating room to monitor the president's heartbeat is too modern for the early 60's.
The admiral is wearing his hat indoors, military officers typically remove their hats indoors except in some select circumstances.