A special museum exhibition commemorating 9/11 opens in Washington . The National September 11 Memorial Museum will open to the public on Tuesday, Sept. 11, at 1 p.m. Going through debris from the airliner was `` overpowering , '' a museum curator says .
A special museum exhibition commemorating 9/11 opens in Washington . The exhibit includes material from United Flight 93 , which crashed after hijacking . Going through debris from the airliner was `` overpowering , '' a museum curator says .