WASHINGTON (CNN) -- The many monuments on the national mall in Washington are emblems of America that honor historical heroes and sacrifices. They are also very vulnerable terrorist targets.

http://www.cnn.com/2001/US/10/18/rec.monument.security/index.html

WASHINGTON (AP) -- Monuments and government buildings in the nation's capital should be protected with fences, walls and terraces that blend into the landscape, a federal planning report says.

http://www.cnn.com/2001/TRAVEL/NEWS/11/01/capital.security.ap/index.html