The advance copies of my book on the Revolutionary War, Homegrown Terror: Benedict Arnold and the Burning of New London, have arrived today at the publisher's. Just a few weeks ago I was in Concord, and made a pilgrimage to the spot where the Revolution started...or at least where the first shot was fired, the bridge across the Concord river by the Old Manse. When Arnold heard of the battle in New Haven, he mustered his small band of militia and marched to join the war, a passionate American patriot. Five years later he broke the hearts of his colleagues and friends and took 20,000 pounds to betray them.