South Dakota National Guard Unit Detachment 2 of the 200th Engineering Company held an appreciation day event Saturday, Aug. 17, at Indian Creek Recreation Area. Unit members held a demonstration on bridge building and also gave area residents and their guests boat rides. Those attending were allowed to ride the roll bridge as it was maneuvered around the bay at the east boat ramp. Lunch was also served. Residents donned life jackets and boarded the roll bridge before guard members moved the bridge into the bay. Boats guide the bridge around the bay as the locals enjoy the ride.