whitewashed history
Apart from the fact that, as key JFK aides like Ted Sorensen have said, Kenny O'Donnell was a minor-to-nonexistent figure during the Cuban Missile Crisis, this film also seriously skews much of the real history.
For a more scholarly and authoritative account, see:
http://www.gwu.edu/~nsarchiv/nsa/cuba_mis_cri/annals.htm