After his adult son shot a man in the leg Wednesday and sheriff's investigators took his son to jail, James Loudon had many questions. Some were about the details of the shooting, which he and his construction worker son say was self-defense. Loudon, a retiree from Chicago, didn't see the shooting but he thinks he knows most of those details now. His remaining questions are mostly about a new Florida law. It was advertised as expanding the right to use firearms and deadly force when people think they are threatened with illegal violence. Loudon hopes that law, lauded by the...