Jack Valenti (far left)
Jack Valenti was a 20th century American. He served as a liaison between the president and the news media.
On 22 November 1963, in the aftermath of John F. Kennedy's assassination, he witnessed Lyndon B. Johnson being administered the Presidential Oath of Office taboard Air Force One. (TOS-R: "The Cage")
The website jfklibary.org identified this indivdual in the photo.