A police car blocks a road near the Discovery Channel headquarters (rear) in Silver Spring, Maryland, on September 1, 2010. A gunman fired several shots and took at least one person hostage on September 1 at the Discovery Channel headquarters near Washington, media reports said, quoting police who feared the assailant might have a bomb, and that the man entered the lobby of the building and fired a weapon five or six times before declaring: “Nobody is going anywhere.” AFP PHOTO/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
