P.S. speaking to an FDNY official not long after 9/11. For those that don't know it, FDNY and NYPD get on in many ways like Christians and lions. Rough paraphrase of his observations:

We'd finally agreed that the FD had lead for explosions and fires, and the PD had the lead for acts of terrorism. That seemed like a great plan, and we were ready to live with that. Until we had an act of terrorism that caused an explosion and a fire, when it didn't do much for us and we were back at it.