Sean was last seen on 12/12/1992. He, and three others, went missing from Bucareli Bay after the fishing vessel, Sea Castle, overturned. The four missing individuals were not wearing life vests or survival suits at the time of the accident. Four additional people survived the accident. Searches by the Coast Guard found pieces of wood, some styrofoam, and a jacket belonging to one of the missing children. Sean is presumed to have died from hypothermia and washed off the boat by waves along with Barry Ritter (MP #66707), Seth Wade (MP #66484), and Aaron Castle (MP #66476).