BRUSH PRAIRIE - The tracking dog Dakota was shot and killed Tuesday as teams of SWAT officers closed in on an armed convicted murderer - who allegedly had told an acquaintance he wanted to "kill a cop." Dakota, a 5-year-old German shepherd owned by the Vancouver Police Department, was shot in the head and killed about 3 ½ hours after police were called to the Lewis & Clark Railway Co. tracks just east of Northeast Caples Road in Brush Prairie....