On 11/23 at 9:00pm, we responded to the Bone parking lot to locate 3 people who had become stuck in their truck somewhere near Brockman guard station. We were able to locate their cell phone coordinates and send teams directly to them. A hasty team on snowmobiles arrived to assess the situation, followed by a plow and a team with a truck and our amphibious vehicle. We had to tow their truck out as the clutch was inoperable. Heavy drifts made travel very slow and they did not return to the command post until 7am.