RedactedNarrative: On July 13, 2015 at approximately 2054 hours, I was dispatched to the main launch ramp for an injured 14 year old with a dislocated right shoulder. The vessel was en route from Forgotten Canyon and the injury was sustained from a tubing accident. At Approximately 2110 hours, the vessel arrived at the main launch in Bullfrog, UT. The operator stated that he was making a left turn at 19mph when the two boys fell off of the tube into the water. The 14 year old patient landed had landed on the second rider, with his shoulder hitting the center of the spine on the other individual. The 14 year old has a history of dislocating his right shoulder. 14 year old patient was pulled from the water and taken to Bullfrog for further medical care by the operator of the vessel. 14 year old patient was treated on scene by National Park Service and transported to Bullfrog Urgent Care.