SEATTLE - A shooting at a state park near Seattle that left two dead and four wounded stemmed from an argument between two groups, one of which was celebrating a birthday party, investigators said Sunday. King County Sheriff's Sgt. John Urquhart said killed in the shooting Saturday night at Lake Sammamish State Park were one man from each group: a 33-year-old from Kent, Wash., and a 30-year-old from Seattle. The park is about 20 miles east of downtown Seattle. One of... (GunPolicy.org)