(Beaverton, OR)  --  Police are investigating the death of a Portland resident who was struck and killed by a MAX train in Beaverton.  The person was killed about 9:30 yesterday morning at a marked crossing.  Police say the 21-year-old was walking west on the south side of Baseline at the MAX tracks, then waited for a train traveling east to pass before walking onto the tracks, where a train traveling west hit the victim.  The person's name has not been released.