RedactedNarrative: Operator, and wife, left their residence at approximately 2:30 pm on March 26, 2020. They drove to Rock Harbor Marina where they arrived at 3:03 pm according to video surveillance.  Operator stated they had owned the slip at the private marina since 2007. Operator stated they would go out on the lake each spring around this time of year when the weather would warm. 
  
  They went down to their 2014 Sunchaser pontoon, TN registration 2562 EH, and took the cover off the rightside of the vessel and folded it onto the leftside. Video surveillance shows the vessel leaving the marina at 3:28 pm.  Operator stated they came out of the marina and went upstream to Straight Creek Boat Dock to fuel up. After getting fuel, they went to an area just below Straight Creek and pulled the pontoon onshore. 
  
  Operator walked the shore looking for arrow heads while Wife read a book. Operator stated they left the area headed back to Rock Harbor at approximately 5:15 pm.  Operator stated as they came around the bend below Straight Creek they began to encounter wind. Operator stated they were going slow approximately 10 mph. When they were within 250-300 feet from Rock Harbor the wind got under the boat cover and blew it up. When the cover came up Operator put the vessel in neutral. Wife got up to get the cover on the boat. 
  
  Operator stated the front gate of the vessel was usually closed, but on this day they had left it open. Wife tripped as she was getting the cover and fell overboard off the front of the pontoon. Operator stated he could not see her in the water and began to call her name trying to locate her. Operator stated he looked toward the back of the vessel and saw Wife 6-8 feet behind the pontoon.  Operator stated he could tell she was having trouble so he took his shoes off and jumped in. 
  
  Operator was able to swim to Wife. He stated they both went underwater a few times before he got her up. Operator stated Wife was limp and not moving or talking as he was holding her. Operator stated Wife slipped through his arms and disappeared. The wind blew the pontoon away from them while they were in the water. Operator tried swimming towards Rock Harbor Marina but was swimming into the wind and was not getting any closer. 
  
  Operator lay on his back floating moving his arms and legs. Due to lake levels rising recently a lot of debris was floating in the water.  Operator was able to swim to a tree that was floating nearby. Operator used his belt to attach himself to the tree. Operator swam the tree to an island just upstream from Rock Harbor. Operator began to yell and wave his arms at vessels passing by for help.  
  
  Subjects 1 and 2 were coming downstream from Straight Creek on their pontoon. Subject1 heard someone yelling and thought it was kids playing. When he looked toward the island he saw someone waving their arms. They were able to get Operator onboard their vessel. Operator told them he thought his wife had drown. Operator was extremely cold and suffering from hypothermia from being in the 55 degree water. Subject2 wrapped Operator in towels and the cover of the boat as Subject1 called 911. They took Operator to Rock Harbor Marina where they were met by emergency personnel. Operator was flown to the University of Tennessee Medical Center where his was treated for hypothermia. 
  
  Operator stated Wife had been dealing with health issues over the past year. Wife had not been able to take her medications for Multiple Sclerosis due to taking chemotherapy. Operator stated he had noticed her balance and walking diminish since she had been off her medications, and felt that contributed to her falling overboard.
  