Engine 18 Squad18 fire house building in Greenwich Village.
FDNY fire companies and EMS crews were deployed to the World Trade Center minutes after Flight 11 struck the north tower. Chief officers set up a command center in the lobby as first arriving units entered the tower and firefighters began climbing the stairs. A mobile command center was also set up outside on Vesey Street, but was destroyed when the towers collapsed. A command post was then set up at a firehouse in Greenwich Village.