The mother of the man charged with killing Auburn University student Lauren Burk said her son was an Iraq war veteran who was changed after his service, and she offered an apology to the freshman's family. Burk, an 18-year-old from Marietta, was found shot on the side of an off-campus road Tuesday night outside Auburn, and her car was found burning in a campus parking lot. Williams told the television station that her son hasn't been the same after serving 16 months in Iraq. She says her son had been living with her in Smiths, Ala., since returning from the...