On October 9, 1963, one week before Lee Harvey Oswald began his job at a site overlooking the president’s future parade route, an FBI official in Washington, D.C., disconnected Oswald from a federal alarm system that was about to identify him as a threat to national security. The FBI man’s name was Marvin Gheesling. He was a supervisor in the Soviet espionage section at FBI headquarters.[17] His timing was remarkable. As author John Newman remarked in an analysis of this phenomenon, Gheesling “turned off the alarm switch on Oswald literally an instant before it would have gone off.”[18]