Close Alexandria shooter used gun similar to M4 semi-automatic rifle The Virginia firearms expert compared the two guns, and the bullets, to describe what Capitol Police were up against -- and how heroic their actions were. WUSA 11:18 PM. EDT June 14, 2017 TRENDING VIDEOS WATCH: Dozens of dirtbikes ride illegally through Northeast DC Two rallies on the steps of the Lincoln Memorial Twin toddlers found unresponsive in Va. family's pool Gov. Hogan calls for investigation into Prince George's Co. schools RAW: Ga. restaurant assault Raw: Road rage crash caught on camera Teens were handcuffed on the National Mall for selling water Police investigate the possiblity of sexual assult in muslim teen murder case Verify: Farmers Insurance commercials, Cali. travel ban Kitchen fire causes evacuation at DC hotel More Stories More money, more problems: Metro fares higher,… Jun 25, 2017, 10:55 p.m. Dozens of people on dirt bikes, four wheelers ride… Jun 25, 2017, 8:43 p.m. Gov. Hogan calls for investigation into Prince… Jun 25, 2017, 6:52 p.m.