scott, have tried calling numerous times to no avail, they don't seem to answer the phone to often in any department. Yet I will keep calling. I am not 21 and am not going to waste my time or theirs sending them an application that they need not even look at.
While I am not 100 percent sure about Suffolk, I know 21is the hirng age for my department. Generally this is because of the firearms requriement. Although, you don't carry a firearm on a regular basis, it is a necessity that everyone have the ability to carry a firearm in an emergency situation. I could be incorrect though.