U.S. President Barack Obama carries a wreath accompanied by New York City firefighters and NYPD police officers during a wreath laying ceremony at the National September 11th Memorial at the World Trade Center site in New York, May 5, 2011. Days after the killing of Osama bin Laden, Obama met New York firefighters on Thursday before a visit to Ground Zero to offer comfort to a city still scarred by the Sept. 11 attacks. REUTERS/Kevin Lamarque (UNITED STATES – Tags: DISASTER POLITICS ANNIVERSARY)