When Peter and his team arrived at the scene, NYPD's ESU support unit had already been in position. ESU is NYPD's Emergency Services Unit, akin to LAPD's SWAT, and they were definitely expected to deploy for an incident like this one, involving the suspect taking residents of an apartment building hostage.
Peter arrived with Jimmy and the others at the FBI's location, which was very conspicuous with people wearing suits and jackets emblazoned with "FBI" amidst a crowd of officers in black uniforms.
Peter: "Ruiz, how's it going?"
Ruiz: "NYPD's negotiators have already entered the building, and now we are waiting for updates. The walkie-talkie he carried was taken away by the suspect upon entering; it's all on his progress now."
Peter nodded and moved aside. Jimmy followed Peter, observing the situation on the scene. The crowd was standing far from the apartment building, a distance from which Jimmy couldn't see anything inside.
