This weekend brings the fourth annual Polar Plunge, a fundraiser for the Special Olympics of Indiana held on the Hulman Center’s south patio. Several members of the community will be raising money as they plunge into a freezing pool of water on what is expected to be a frigid Saturday morning. Some notable plungers include Mayor Duke Bennett, University Police Chief Bill Mercier, several Terre Haute and ISU Police Officers, and a few of your favorite Mix-FM DJs. Check-in starts at 8:15 Saturday morning and the event starts at 9:30.