fund raiser
You might want to contact TEAM SPARTAN, which is a training company in the Chicago, Illinois area.
Every year they run a fund rasier for Toys-for-Tots that gets a big turnout. (I shot in the first one, but work commitments have prevented me from going down to the last couple

) They may be able to give you some ideas.
http://teamspartan.com/TEAM_SPARTAN_NEWSLETTER_NOVEMBER_2007.htm
It's REALLY hard to get the cops to come out and shoot, because most of them don't have much interest, and some of the officers who have some degree of interest are intimidated or reluctant or something. Even when you give them copies of the courses of fire so they know what to expect, they won't come out. (Of course, if they have really young kids at home, I understand . . . )
As one of my USPSA buddies said years ago -- "Cops will go out by themselves and stop a car full of strangers on a dark road without any backup and think nothing about it, but they're afraid to come out and shoot in front of 'civilians' because they don't want to look bad!"