(Kalama, WA)  --  Police are investigating after a Longview man was found dead in the Kalama Marina.  Authorities say 61-year-old John Duchsherer had last been seen on a boat at the marina at 1:30 yesterday morning, after he and a friend arrived there from a night of drinking.  Police say Duchsherer's body was found yesterday afternoon by boaters after he apparently drowned.