JFK assassination: Secret Service Standdown

Assassination of John F. Kennedy, mortal shooting of John F. Kennedy, the 35th president of the United States, as he rode in a motorcade in Dallas, Texas, on November 22, 1963.
Watch as the two secret service men assigned to protect president Kennedy's motorcade are ordered to stand down just minutes before entering Dealey Plaza. They are obviously not happy about being given these orders. It brings up another question: Where was NORAD on 9/11, who was in charge and why?