PRIVATE SECURITY FIRMS BLOW! There are more then enough people here telling you to stay away from them. If you want to work security go work for security for a company, work for a company that employs their own private security guards. In house security is the way to go.
As for actual jobs, State Police is January 19, University Police is November 17th (correct me if i’m wrong on the actual day), PA State Police is in 2008, and I would also look into Nassau and Suffolk county police. They are among the highest paid police agencies in NYS. After 3 years both agencies avg $90k base pay.