The conversations were captured by the White House Communications Agency (WHCA), which routed all phone calls and radio traffic. The tape also includes communication between the WHCA and a second aircraft of the Presidential fleet, known as 86972 (by its tail number), which was en route to Tokyo at the time of the assassination with members of the President's cabinet.

The recording includes references to new code names and incidents. Among them are a private conversation by head of the Secret Service Jerry Behn about the disposition of the President's body; an expanded conversation about how to remove the body from the plane and where to take it; an urgent effort by an aide to Air Force Chief of Staff Curtis LeMay to reach General Clifton; and attempts to locate various Congressmen from Texas.