How to get into towing?

Im 17 (18 fairly soon) and just realized I’d enjoy being a tow operator. My end goal is to be a police officer but since you can’t apply until you’re 21 I figure driving tow trucks is a good way to fill in those years… good experience for law enforcement as well (dealing with difficult people, accidents, helping others out… etc)

I’ve sent emails to a couple tow companies in my area stating my age interest experience etc (im in Massachusetts)

What are the requirements to be an operator? Im talking about a light duty wrecker not a flatbed. Just have a valid license and go through training? Also would it be possible to work as an operator while also going to college part time?

Thanks for any advice!