RedactedNarrative: The following events occurred in Jefferson County, Tennessee on Tuesday, May 10, 2016.
  
  Victim departed his lakeside residence at approximately 1100am EST to fish from a 2008 Tracker Pro Team 175TXW bass boat type vessel with Tennessee certificate of registration TN-0714-EK and hull identification number (HIN) BUJ09749L708. His wife watched Victim depart from their shared residence. Wife indicated he was alone in his vessel and wearing a type 5 convertible personal flotation device (PFD) bearing model number 3042C, lot number G2C5057. Using data recovered from a Lowrance brand electronic device that was recording travel information, Victim''s vessel departed an inlet directly behind his residence then travelled upstream (southeast) until this fatal incident occurred. As no person witnessed the fatal incident, only deductive reasoning can be used along with autopsy results and downloaded GPS data to determine the possible events prior to Victim''s death.
  
  At approximately 1:00pm EST, an operator of a recreational fishing vessel with passenger, found a red 2008 Tracker Pro Team 175TXW bass boat type vessel adrift on Douglas Lake. Both men indicated there was fishing tackle and evidence of recent human activity aboard the 2008 Tracker but nobody aboard the vessel. Subject1 contacted the Tennessee Wildlife Resources Agency''s (TWRA) Region 4 emergency number to report his findings. Subject1 spoke with Region 4 dispatcher. Dispatcher advised Subject1 not to molest or touch any part of the red Tracker. Furthermore, Dispatcher asked Subject1 to tow the red Tracker to the nearest bank and secure it. During this process, a second recreational fishing vessel known to Subject1 arrived on scene. The second recreational fishing vessel''s operator was briefed by Subject1 on his findings. Subject2 took it upon himself to search for the missing operator. Subject2 located a male, face down in Douglas Lake with a partially inflated type 5 convertible PFD floating his body. At this point, Dispatcher was advised of the discovery and officers were dispatched to Subject1''s and subject2’s location.
  
  I, Wildlife Officer, was dispatched to Subject1''s location. I arrived at approximately 2:15pm EST via an Agency patrol vessel. During the response, I asked Dispatcher to have more TWRA Wildlife Officers dispatched, and to notify the Jefferson County Sheriff Department along with the Jefferson County Emergency Medical Services (EMS). Once on scene, information was gathered. All three individuals were released after verbal statements were taken. TWRA Wildlife Officers arrived via Agency patrol vehicles, and assisted in the boating incident investigation. After the Jefferson County EMS arrived, two paramedics, Officer and I boarded the Agency patrol vessel, and recovered the male body from Douglas Lake. The male body was pulled from the lake, placed inside the patrol vessel and identified by using the government issued driver''s license found in the wallet located in the back pocket of his pants. Officer and I photographed and documented Victim''s condition. During the documentation process, it was noted the type 5 convertible PFD was partially inflated and underneath his left arm. Rotating the body, it was found the type 5 convertible PFD was not buckled or clasped around his waist as required for proper deployment of the PFD. Victim''s body was released to the Jefferson County EMS and ultimately transported to the Regional Forensic Center in Knox County, Tennessee for a TWRA requested autopsy.
  
  