A young man holds his head as he sits in front of a memorial for FDNY firefighters from Ladder Company 20 that died at the World Trade Center during September 11 terror attacks before a ceremony to mark the 10th anniversary of the 9/11 attacks on September 11, 2011 in New York City. New York City firefighters are commemorating the 10th anniversary of the 9/11 terrorist attacks and honoring the 343 firefighters who died in the line of duty.