John F Kennedy - mordet - 22 November 1963

Conclusions regarding the Kennedy assassination
On the Kennedy assassination, the HSCA concluded in its 1979 report that:
Lee Harvey Oswald fired three shots at Kennedy. The second and third shots Oswald fired struck the President. The third shot he fired killed the President.
Scientific acoustical evidence establishes a high probability that at least two gunmen fired at the President. Other scientific evidence does not preclude the possibility of two gunmen firing at the President. Scientific evidence negates some specific conspiracy allegations.
The committee believes, on the basis of the evidence available to it, that Kennedy was probably assassinated as a result of a conspiracy. The committee was unable to identify the other gunmen or the extent of the conspiracy.
The committee believes, on the basis of the evidence available to it, that the Soviet Government was not involved in the assassination of Kennedy.
The committee believes, on the basis of the evidence available to it, that the Cuban Government was not involved in the assassination of Kennedy.
The committee believes, on the basis of the evidence available to it, that anti-Castro Cuban groups, as groups, were not involved in the assassination of Kennedy, but that the available evidence does not preclude the possibility that individual members may have been involved.
The committee believes, on the basis of the evidence available to it, that the national syndicate of organized crime, as a group, was not involved in the assassination of Kennedy, but that the available evidence does not preclude the possibility that individual members may have been involved.
The Secret Service, Federal Bureau of Investigation, and Central Intelligence Agency were not involved in the assassination of Kennedy.
Agencies and departments of the U.S. Government performed with varying degrees of competency in the fulfillment of their duties. President Kennedy did not receive adequate protection. A thorough and reliable investigation into the responsibility of Lee Harvey Oswald for the assassination was conducted. The investigation into the possibility of conspiracy in the assassination was inadequate. The conclusions of the investigations were arrived at in good faith, but presented in a fashion that was too definitive.
The Committee further concluded that it was probable that:
four shots were fired
the fourth shot came from a second assassin located on the grassy knoll, but missed. The HSCA concluded the existence and location of this alleged fourth shot based on a Dallas Police Department Dictabelt recording that was later discredited, because it was recorded after the assassination, and therefore invalid.
The HSCA agreed with the single bullet theory, but concluded that it occurred at a time point during the assassination that differed from any of the several time points the Warren Commission theorized it occurred.
The Department of Justice, FBI, CIA, and the Warren Commission were all criticized for not revealing to the Warren Commission information available in 1964, and the Secret Service was deemed deficient in their protection of the President.
The HSCA made several accusations of deficiency against the FBI and CIA.[6] The accusations encompassed organizational failures, miscommunication, and a desire to keep certain parts of their operations secret. Furthermore, the Warren Commission expected these agencies to be forthcoming with any information that would aid their investigation. But the FBI and CIA only saw it as their duty to respond to specific requests for information from the commission. However, the HSCA found the FBI and CIA were deficient in performing even that limited role.

The HSCA concluded the existence and location of this alleged fourth shot based on a Dallas Police Department Dictabelt recording that was later discredited, because it was recorded after the assassination, and therefore invalid.