The NY system is a little different from others that I have seen. This contract governs what equipment can be purchased and for how much, but does not give detail as to actual purchases. I wish the rabbit hole went deeper but this is interesting, nonetheless. Take a look at Page 8, where several POP-capable MPH units were added including the Z-Series, which is capable of the virtually undetectable 16ms bursts. Interpret this document as you will.