And another 'keystone' coincidence:

Jfk Jr's George Magazine Survival Guide to the Future edition, featured Mt. Rushmore on the cover.

Mt. Rushmore's elevation is 1745 meters and it's located in 'Keystone' SD.

Kennedy was also a George Washington fan; GWs spot at Mt. Rushmore is #17. Interesting that he's 17 instead of #1.

Washington's code name was Agent 711🥳