How would I go about getting a job in security?

I’m a full time Psychology/Criminal Justice student and when classes start in the Fall, I will need to find a part time job to replace my full time job. I think it would be good to break into the CJ field early by working in security.

I’m a very unintimidating female with no upper body strength, so your run-of-the-mill security guard job isn’t going to be for me—I’d never get hired. However, I know there are places out there that have people who watch security cameras, walk around to make sure nothing fishy is going on, providing escorts, etc. I just don’t know how I’d go about getting a job like that.

Are there security companies who provide these types of employees to other companies or is security hired just like every else in that company? I never see job openings like this, so is there a certain way or certain places I can find them?

It would need to be part time, second shift. I can’t work all night while I’m a student and I can’t work during the day while I’m in class. 25 hours a week will be awesome. My school isn’t hiring any new cadets. Would a job like this even exist or should I just focus on finding any job that will help me get through school?