Hmmmm, Ferrara is building 5:

Holden, LA – Ferrara Fire Apparatus, Inc., America’s premier custom fire apparatus manufacturer, has been awarded another large contract by the City of New York. Under the terms of the newest agreement, Ferrara will supply FDNY five heavy rescue trucks. The rescues will be built on Ferrara’s heavy duty Igniter chassis with a stainless steel tilt cab.

One is probably going to be a Reserve.

Just shows that Ferrara's donation to FDNY after 9/11 paid off.

Location: Dalton, GA