Some 11:11 and 11:12 connections
John F. Kennedy made his first formal visit to Arlington National Cemetery on Armistice Day, Nov. 11, 1961, to place a wreath at the Tomb of the Unknown Soldier. Nov 11th is our Veteran's Day and the planned date for the Military parade.
Eleven days prior to Kennedy's assassination he returned to Arlington for the 1963 Armistice Day services. This time he did not address the crowd in the amphitheater.
On Nov. 22, 1963, while on a campaign trip to Dallas, President Kennedy was shot and killed.
11/22/63 is a novel by Stephen King about a time traveler who attempts to prevent the assassination of President John F. Kennedy
https://www. arlingtoncemetery.mil/Explore/Monuments-and-Memorials/President-John-F-Kennedy-Gravesite
https:// en.wikipedia.org/wiki/11/22/63