RedactedNarrative: Unit 1 was pulling a tube around a stationary Unit 2. Unit 1 made a few circles around Unit 2, then Unit 1 drove over Unit 2. Unit 1 impacted Unit 2 on the port side stern of Unit 1. After impact was struck on starboard side of Unit 2. Unit 2 was able to lift unit  off. Both units then drove to Brown Road boat camp. No injuries on either unit.