Movie seen but forgot the name??? USA gets invaded, NYC neighborhood gets invaded?

Started out with a girl and boyfriend emerging from a subway station.
War is breaking out, and her boyfriend is shot and killed.
She walks through the city and chaos is descending.
Violent scene after violent scene.
The bad guys are these soldiers dressed all in black with machine guns just gunning people down.
There are parts I don't remember well, which is why I want to look it up and see it again.
She takes refuge in a building and the person in there thinks she is trying to rob him.
She finally hooks up with this old soldier ... who protects her, and they try to make it to the meet up point so the Army can pick them up and go to safety.
There are gangs that they get mixed up with in a laundry, and they send then to a church
to get guns.
She is trying to get to her mother, but she ends up with her drug-addicted sister.
Does this run any bells?
It was actually a pretty good action movie.
I think the name of the movie was the name of the neighborhood, or the street that she lived on.
Can't believe this is so hazy.