The best USMC MOS other than Infantry or MP to become a cop?

I'm currently on Boot Leave and got ****** over and ended up with Food Services as my MOS. I'm going to LAT move after 24 months (or take any other quicker way) and take another MOS. I'm going to be a cop when I get out but can't be an MP because I'm color blind and don't want to be Infantry for 2. I want to be in the MA. State Police which us crazy hard to get into. I'll have a 4 year Criminal Justice Degree, but WHAT JOB WILL HELP ME GET IN?