Gunman opens fire at Chicago hospital, killing 3

CHICAGO — A gunman opened fire Monday at a Chicago hospital, killing a police officer and two hospital employees after a domestic dispute exploded into a firefight with SWAT team members inside the medical center, authorities said.Police said it was not immediately clear if the attacker took his own life or was killed by police at Mercy Hospital on the city's South Side."The city of Chicago lost a doctor, pharmaceutical assistant and a police officer, all going about their day, all doing w