A Marine, in a temporary fighting position, mans an FNMI 5.56 mm M249 Squad Automatic Weapon (SAW) at a guard post on stern of the hospital USS Comfort, at Pier 92, New York Harbor. The ships presence and extra protective measures were implemented after terrorist attacks on the World Trade Centers Twin Towers in New York and at the Pentagon, when hijackers deliberately flew civilian airliners into the buildings, on the morning of 11 September 2001