Fire is probably technically inaccurate, Raph. The energy expulsion from whatever brought them here would likely generate quite a bit of heat, but unless someone was stupid enough to keep flammable items nearby, there was unlikely to be any actual fire.

"Maps, I told you. You can't just run around the city without knowing where you're going, and you need to know where our places are, at least. Raph's usually with me, anyway, but if we're not there then we're at Raph's."