RedactedNarrative: Initial Call
  On 5/21/2016 I received a call about a fire that was taking place at the Wahweap Marina which involved a vessel. There were reported injuries that occurred from the results of the fire. I responded from Page and went to the Wahweap Marina where I located a badly burned male standing at the Lake Powell Marina Store.
  
  Action Taken
  I called to other rangers that I was out with a victim, later identified as Subject1. Ranger1 and Ranger2 soon arrived on scene and started to assist with the victim. Subject1 had sustained major burns to his legs, back, arms and head. Ranger3 drove fire vessel 360 to the scene and reported active smoke from the involved vessel. I went to the location of the vessel (AZ XXXXX) which was on AA Dock. I changed into fire turnout gear and assisted Page Fire Department with extinguishing the fire. We removed the seats, side gunwale cover, and other items from inside the cabin of the vessel. I then took pictures of the damage to the vessel. After the fire was out we drove the fireboat to the location of the Subject1.
  
  We were informed that there were two victims that were injured from the fire. The second victim was the vessel owner Subject2. Subject2 sustained burns to his arms and head. We placed both victims on Vessel 360 and boated to the Wahweap Main ramp where two medical helicopters were awaiting our arrival. I was able to interview Subject2 about the fire. Subject2 verbally stated something to the effect that they arrived that night and put away their belongings. He (Subject2) wanted to see if the boat would start up since it has not been operated since last year.
  
  He was near the helm and Subject1 was standing next to him when Subject2 turned the key to start the vessel. Subject2 did not turn on his blower to vent out any fuel vapors that were in the engine compartment. When Subject2 started the vessel the fuel vapors ignited causing the fuel vapors to ignite and an explosion to happen with fire that went from the engine compartment into the cabin portion of the vessel and up through the open door where Subject1 was standing. According to Subject2's statement Subject1 screamed and got off the vessel. Subject2 used a water hose and tried to put the fire out. A bystander used a fire extinguisher and put out the fire at the helm. Subject2 used a water hose to put out to knock down the flames on the vessel. Through these actions Subject2 burned his arms and head during this process. Subject2's actions using the water hose helped contain the fire to his vessel.
  
  DAMAGE
  The damage that occurred to the vessel was extensive. The interior was damaged from smoke, water and flame. The most damaged area was the access port to the engine inside the cabin area where the flames exited the engine compartment. The gunwale panel was removed in order to make sure there was no longer any fire trapped behind the area. It is unknown what damage occurred in the engine compartment. Soot was visible from all the air cowlings on the vessel where fire exited these areas. I cannot determine financial amount of damage that occurred at this time.
  
  CONCLUSION
  I determined that the cause of the accident was fuel vapors that were trapped in the hull compartment. Subject2 did not turn on the blower for the recommended 5 minutes. Had the blower been turned on the fuel vapors would have been exhausted outside of the hull and the potential of fire would have been lessened.
  
  The mother of Subject1called my office and wanted to express her concern with the accident. She was concerned her ex-husband did not follow proper procedure for starting up the vessel and purposefully hurt her son. She stated something to the effect that Subject2 had been drinking alcohol before they went to Lake Powell and this was his fault her son was injured. She also stated that she has had a working relationship...