Ten families are grieving their loved ones who were killed when a gunman opened fire at a Colorado grocery store on Monday. The attack at King Soopers supermarket in Boulder was the seventh mass shooting in the U.S. in the past seven days. In a Tuesday press conference, police identified the victims, included among them a Boulder police officer and a store employee. Eric Talley was the first responding officer to arrive at the scene. He was the father to seven children, the youngest a 5-year-old.