Oh, but there are fault lines everywhere on the East Coast United States.  There is a major one just under Manhattan.  Another one under Long Island, and one around the Indian Point Nuclear Power station.  Over twenty years ago, an earthquake struct around that area sending shockwaves down into New York City.  IIRC, a small quake inflicted quite a bit of damage in one neighborhood in Brooklyn back in the fifties, almost toppling several building.