 The Helena Ambassadors, also known as the Redcoats, will once again host a free family-oriented 4th of July celebration at Centennial Park and the Old Glory Landmark. From 11 to 2 July 4th, there will be bounce houses, live music, and a special flag-raising ceremony at noon. The 4th of July celebration at Centennial Park is free. Connecting our community, Montana Radio Company and Northwest Battery and Automotive.