NEW YORK (Reuters) - The mother of a 7-year-old New York City student who brought a handgun to his school in a book bag on Thursday has been arrested on multiple weapons possession and endangerment charges, police said on Friday. New York police said Deborah Farley, 53, had put the gun in her son's school bag. It was unclear why she had done so and whether the child was aware he was carrying the weapon when she dropped him off at his public elementary school, a police department spokeswoman said. Farley is expected to be arraigned Friday afternoon. ...