Division of Military and Naval Affairs Headquarters Building Superintendent John Fallorino ( left) and New York State Military Museum Assistant Curator Chris Morton (right) place a cover over a piece of granite from the section of The Pentagon destroyed during the attacks of Sept. 11 2001 as a Sept. 11 Memorial is installed in the armory section of DMNA Headquarters on Friday April 1. The exhibit also featiures steel from the World Trade Center as well as a recreation of the memorial lights which shown each year following the attacks.