A redcap was pushing a wheelchair through the station, under a ceiling so lofty that the place seemed empty, though hundreds of people were milling around, preparing to board the early trains. The old man in the wheelchair had a blanket over his knees, in spite of July heat in Los Angeles. Beside him walked a smartly dressed middle-aged woman, slimmed by diet and with her steel-gray hair looking as if she'd just stepped out of a beauty parlor. She kept up a steady stream of admonitions. "Now, Pa