WEATHER ALERT Winter Weather Advisory issued for Montgomery, Howard, Carroll, Frederick, Washington, Loudoun and Berkeley Counties from 3 p.m. Sunday until 8 a.m. Monday.

Navy Yard Shooting

A gunman launched an attack Monday inside the Washington Navy Yard, killing 12 people before he was killed. The mass shooting was deadliest on a military installation in the U.S. since the attack at Fort Hood, Texas, in 2009. For stories on the the event: Navy Yard Shooting.