An 83-year-old woman who awoke early Sunday to the sound of someone trying to force open her screen door, shot and killed a teen-age boy standing on her porch, officials said. Shortly after 4 a.m., the woman thought she heard a burglar at her front door, so she yelled through the closed door, warning the person to leave, police said. When it sounded like the person was close to breaking the screen, she fired one shot from a revolver through the door, according to a report. Police arrived at her East Side home, in the 1400 block of Wyoming, and ...