Madison Police and Fire will keep an eye on the Mifflin party from a special command center.
"You're in the Mifflin Street command post, which is virtually identical to the Halloween command post. Each person is going to have a base station radio so we can communicate with our people out in the field. We'll have telephones so we can talk among each other. The officers in the field will communicate with us and tell us when we need help when they need an ambulance, when they need a firetruck," says Assistant Fire Chief Carl Saxe.
It's the same command post they use during Halloween parties on State Street.
Officials hope to be able to keep an eye on any problems and react quickly when they crop up.
The command center will swing into action at noon on Saturday, and stay up and running until the party's over.