(Longview, WA)  --  Police are releasing the identity of a man who was shot and killed by police in southwest Washington.  The Cowlitz County coroner's office says 51-year-old Christopher Johnson was shot by SWAT officers Sunday night.  Police say officers were responding to reports of an armed suicidal person on 18th Avenue when the shooting happened.  An autopsy showed Johnson died from multiple gunshot wounds to the chest.