(Portland, OR)  --  Police are seeking the public's help in their search for a southwest Washington state man who's been missing since October.  The Clark County Sheriff's Office says 40-year-old Ryan Berg was last seen October 24th in Brush Prairie, Washington.  Police believe he could be traveling to the southern Oregon coast.  He's described as six-foot-four-inches and 225 pounds with green eyes and a scar above his left eye.