KCR Polar Plunge

Dead Pool, aka Jonathon Jones of the West Chicago Police Department, thrills the crowd before dunking himself in the frigid lake water during the annual Polar Plunge to benefit Special Olympic athletes on Loon Lake at Silver Springs State Park in Yorkville on Sunday, March 5, 2017. Steven Buyansky for Shaw Media

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Dead Pool, aka Jonathon Jones of the West Chicago Police Department, thrills the crowd before dunking himself in the frigid lake water during the annual Polar Plunge to benefit Special Olympic athletes on Loon Lake at Silver Springs State Park in Yorkville on Sunday, March 5, 2017. Steven Buyansky for Shaw Media

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