Historian Steven M. Gillon recalls his friendship with John F. Kennedy Jr. on the 20th anniversary of his fatal plane crash. The life of the late magazine publisher is being chronicled in a new A&E documentary titled 'Biography: JFK Jr — The Final Year,' as well as a book by Gillon titled 'America's Reluctant Prince.' Steven M. Gillon can vividly recall when he and his pal John F. Kennedy Jr. were at a bar watching a fight on the big screen and a man pushed him aside and exclaimed “You’re John!” hugging the son of late President John F. Kennedy....