RedactedNarrative: On September 14th, 2019, at 10:25 AM, WCO #1 was notified by dispatch that an unoccupied boat going around in circles near Peoria flats. 
  
  WCO #1 arrived on scene at 10:49 AM and got into the Pierre rescue boat. WCO #1 and Pierre rescue were able to stop V1 from driving in circles and safely secure the boat. WCO #1 found the throttle fully opened. WCO #1 located four life jackets and one fire extinguisher inside the boat. V1 was equipped with a kill switch which was in the on position without a lanyard attached.  No occupants were found in V1. 
  
  WCO #1 notified supervisor of incident and to mobilize additional units for recovery efforts. WCO #1 did not find any alcohol or drugs in the boat during the investigation. WCO #1 looked at V1 Lowrance GPS unit and marked where V1 first started doing circles, approximately a quarter mile away. WCO #1 was able to make contact with the reporting party and filled out a written statement. SO took over command on recovery efforts due to fatality related incident. 
  
  Pierre rescue had two boats in the water running side scan and had a dive team assembled. At 1:30 PM, additional WCO units arrived on scene with another boat and sea scan unit. WCO units were able to locate and confirm O1 in the water with the sea scan unit. Dive team was mobilized and successfully recovered O1.  The kill switch lanyard was not observed on O1.
  
  At 2:39 PM, a coroner was requested. O1 was not wearing a life jacket when recovered and had multiple large lacerations on his posterior side. Lacerations appeared to have been from the propeller. SO took O1 truck and boat as evidence.  
  
  Report delayed until autopsy report completed and cause of death determined.
  
  End of report
  
  It is believed the operator bumped the throttle, which caused him to become ejected from the vessel.  He was struck by the vessel's propeller and succumbed to drowning.
  