The Tokyo Fire Department operates AS332 Super Pumas in the highrise fire suppresion role very successfully, they have a snorkel setup with a trainable boom on the belly with a 1200 Litre tank, they fight fires over 10 stories high, put Tokyo Fire Dept Helicopters into Google and they have some great shots of the Helo in action (beyond my ability to do a link!!)
I don't agree with FDNY , an S-92 set up as a fire helo would be great for a place like New York.