They're taking action for Special Olympics in a big hockey game.
It's called "Guns and Hoses."
The annual event held at the US Cellular Coliseum gives police and fire the chance to go head to head on the ice.
All proceeds benefit Special Olympics.
The organization provides sports training and athletic games to those with special needs.
All are invited to watch these teams who normally keep the peace--get riled up at the rink.
"Sometimes you'll laugh," said Police Spokesman Dave White. "You'll get a couple guys who go out on the ice because everybody plays and they're not quite up to snuff. They haven't practiced enough. It's fun to watch them slip and fall."
The event begins Saturday at 3 pm.
Those who buy a ticket will also get free admission to the Bloomington Blaze hockey game later that night.