Jimmy pressed the intercom: "The suspect is down, it's safe, you guys come over quickly." He released the intercom button, but did not hear any "received" message. He glanced at the intercom, not broken, well, forget about them.
Jimmy took out his phone and dialed 911 to report the incident, only to be informed that someone had already called, and patrol officers were on their way. Just as well, he directly asked them to dispatch a few ambulances, which could save some time.
Mark and Julia weren't initially that far away, so they were the first to arrive. Jimmy told them to watch the two corpses here while he went to look for the scene of Will's earlier shooting.
After Jimmy left, the NYPD patrol had already arrived on the scene. Mark and Julia showed their badges and had them cordon off the area, while the rest headed to Jimmy's location.
