Stay tuned... From CNN:
http://news.blogs.cnn.com/2010/09/01...iref=allsearch
"Police: Reports of armed man at Discovery Channel building
[Updated at 1:39 p.m.] At least one hostage is confirmed at the headquarters of the Discovery Channel in Silver Spring, Maryland, police said.
[Posted at 1:34 p.m.] A police emergency response team was responding to reports of a man with a gun and possible explosives at the headquarters of the Discovery Channel in Silver Spring, Maryland, a police spokeswoman said.
Montgomery County police received the call at about 1 p.m., said Angela Cruz. The call came from One Discovery Place, the channel's headquarters.
The area has been evacuated, Cruz said. No further information was immediately available."