STOCKTON — A northbound Amtrak train struck and killed a pedestrian Monday morning in northeast Stockton, police reported.The unidentified man was walking across the Union Pacific tracks without permission about 10:18 a.m. and was struck, according to an Amtrak spokesman. He was declared dead at the scene. His name has not been released pending positive identification and notification of next of kin.The police report indicated the collision occurred somewhere [...]