CNN US

Earlier this month, two NYPD officers were killed while responding to a domestic disturbance call. According to authorities, the suspect used a Glock 45 that was stolen in Baltimore in 2017, prompting city and state officials to call for stronger measures against gun violence and gun trafficking across state lines. The tragedy highlighted a growing concern about the seeming flood of firearms across America.

National Transportation Safety Board investigators descended into a wooded ravine in Pittsburgh Saturday where a snow-covered bridge collapsed one day earlier.