Capitol Police email an urgent bulletin to all congressional staff, telling them to hide and take shelter. (via the Washington Post)

Christopher Rodriguez, the director of D.C.’s Homeland Security and Emergency Management Agency, tells Maj. Gen. William Walker that the “U.S. Capitol building windows are being broken” and requests that D.C. National Guard members “report to the U.S. Capitol immediately.” (via the House Committee on Oversight and Reform)