By Theresa Knapp 

In late March, Millis High School student Reaghan McMahon’s cool senior project went off without a hitch. 

McMahon organized members of the Millis police and fire departments to take the “mobile plunge,” a fully equipped mobile plunge pool called the “Bear Force One,” in support of Special Olympics. 

After Millis Police Chief Chris Soffayer took the plunge, he posted on Instagram, “Today was a cold one, but I’m honored to have taken the plunge with John Michael Kearns (JM) in support of Special Olympics Massachusetts.” 

The event raised $4,554 for the organization.