More than 75 people visited Chicago Police headquarters Monday to pick up applications to register firearms on the day the city's new handgun ordinance took effect. The ordinance, which requires gun owners to keep their weapons in their homes, was hastily crafted by the city after the U.S. Supreme Court struck down the city's 28-year-old handgun ban. "We want to know who has weapons so that first responders can be aware of that information before they enter a home," said Police Supt. Jody Weis at a news conference.