RedactedNarrative: Vessel 1 was near black canyon with the victim tubing behind. Winds were sustained at approximately 15mph with gusts to 30mph. Wave heights were reported, by nearest weather buoy, to be eight inches. 
  
  The operator was signaled by the victim that he wanted to stop. The operator reported that the victim needed assistance getting into the boat from the tube. The operator also reported that the victim reported he was having trouble breathing. The operator assisted the victim into the boat and headed back to Las Vegas Boat Harbor.
  
  At the tire line/no wake zone of Las Vegas Boat Harbor the victim went unconscious. The operator hurried to the dock where CPR was started within minutes. 
  
  No obvious signs of Trauma. See NPS report for further details.
  
  Cause of death is undetermined, waiting Clark County Coroner office to finalize report for official cause of death.