On September 15th (or 14th?) 2001 when President Bush went to NYC to meet with victims families and ralley the recovery workers at the World Trade Center he flew on AF1 to McGuire AFB
New Jersey, where he was greeted by Mayor Giulianni and Governor Pataki. From there they took several helicopters to Manhattan heliport, he did this on a couple ocassions after 9-11 when visiting NY.
However now I think he will fly to JFK
and Helio over, over the years I have seen Marine 1 and it's escorts fly very low over my House in Central Jersey the day before the President (either Clinton or Bush) were set to arrive in NYC.
Yesterday I heard "several" loud Helios flying over my house, however because of the bad weather I did not get a look but no doubt it was Marine 1, a second Marine 1 (decoy?) and two-three Chinoks as I've seen on several other occasions.