(Graham, WA)  --  Pierce County sheriff's deputies are investigating what's being called a murder-suicide in Graham, Washington.  Authorities say 36-year-old Kerry Anderson shot and killed his wife, 32-year-old Jessica Anderson, Saturday morning, then shot himself.  Kerry Anderson, who was a member of the military, died yesterday at St. Joseph's Medical Center in Tacoma.  Deputies say the couple's three children, ages five, four, and six months, were all at home at the time of the shooting but were uninjured.