I'm flying into NYC on January 20, which will be a day of love, peace and tranquility in the United States, coming in from JFK. While ♫I'd like to teach the world to sing in perfect harmony,♫ something tells me that people won't be holding hands singing Kumbaya.

In days of discomfort, where are the usual choke points, so I can have contingency plans into Manhattan? Are Subway or other transit options blocked at times? Bridges? Tunnels? Highways?

Thanks