One Arrested in Times Square Subway Blast

The transcript describes a scene at 43rd St and 8th Ave with a large crowd and police presence. A suspect is in custody with no other injuries reported. Emergency personnel and vehicles are on site, and pedestrian reactions are calm. A police perimeter is set up about a block from the Port Authority, affecting transport services, which have been rerouted or stopped. Governor Cuomo and President Trump have been updated on the situation.

Describe the crowd's reaction and behavior at the scene.

What is the extent of the police perimeter set up around the Port Authority?