On August 21, 2010, Mason Scott McLeod, 26, vanished along with three colleagues when their de Havilland DHC-2 Beaver floatplane failed to reach Brooks Camp after departing Swikshak Lagoon in Katmai National Park, Alaska. McLeod was a National Park Service maintenance employee and was traveling with brothers Neal and Seth Spradlin and pilot Marco Alletto. Two weeks of intense search efforts by the U.S. Air Force Rescue Coordination Center, the Coast Guard, and the National Park Service logged more than 60,000 air miles before the official search was scaled back on September 4, 2010.

On September 28, 2010, debris including a tail piece with identifying numbers was found on a remote beach about 28 miles northeast of the departure lagoon. A tent and duffel bag showed signs of exposure to high temperatures, suggesting a possible fire though it could not be determined whether that occurred in flight. Sonar searches failed to locate most of the wreckage, and the National Transportation Safety Board concluded the limited evidence left the crash cause undetermined.

Does anyone have information about the flight, the rescue effort, or sightings in the Katmai area that could shed light on what happened that day?