The sound of saws and clanging fills the night air at Ground Zero, Sept. 11, 2001, as recovery teams try to find survivors and begin the long work of clearing debris. Retired firefighters Kevin ... more 
The sound of saws and clanging fills the night air at Ground Zero, Sept. 11, 2001, as recovery teams try to find survivors and begin the long work of clearing debris. Retired firefighters Kevin McCullagh and Jerry Walsh take a short breather as they survey the scene. (Footage courtesy of Kevin McCullagh and Getty Images.) less 
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