(Lincoln City, OR)  --  A 14-year-old boy is dead after being run over by a vehicle trailer in Lincoln County.  Sheriff's deputies say the accident happened yesterday morning along the banks of the Salmon River, about two miles north of Lincoln City.  Authorities say the teen reportedly fell after trying to jump onto a moving trailer loaded with gear.  The boy was with a camping group from a Japanese immersion magnet program connected to the Portland school district.