Taking a shot but maybe high rise truck/trailer. Been awhile since I looked into newark fire apparatus assignments.This is slightly off topic, but I was listening to call come in recently where a fire was reported at one of the Newport high rises. There was a standard response of 4 engines, 2 ladders, rescue, etc. but I also heard the dispatcher notify a fifth engine and said "Engine 10 please pick up the HRT". Then at the end of the call I heard "Engine 10 out of service, returning the HRT". Does anyone know what the HRT is? And where are they picking it up and returning it to?