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Inside New York's 9/11 Memorial Museum
  • A detail of a World Trade Center 'trident', a steel column that formed part of the building's structural support, seen during a press preview in the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York.
  • Escalators going up to street level past a section of steel facade from the North Tower, floors 96 to 99, (L) seen during a press preview in the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York.
  • The bullhorn President George W. Bush used to speak to first responders and the public at Ground Zero on September 14 is viewed during a tour the National September 11 Memorial Museum on May 14, 2014 in New York City.
  • A display of 'missing people' posters that were hung around New York City after the September 11, 2001 attacks on the World Trade Center, seen during a press preview in the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York.
  • Surviving firefighter Dan Potter's fire helmet, which he used at Ground Zero on September 11, is viewed during a tour the National September 11 Memorial Museum on May 14, 2014 in New York City.
  • Cards, patches and mementos of those killed at Ground Zero are are viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City.
  • A pair of eye glasses recovered from Ground Zero are viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City.
  • Detail of objects found after the September 11, 2001 attack on the Pentagon, seen during a press preview of the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York.
  • Pieces of the plane of Flight 11 seen during a press preview of the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York.
  • A firefighters shirt used at Ground Zero on September 11 is viewed during a tour the National September 11 Memorial Museum on May 14, 2014 in New York City.
  • A photograph of one of the World Trade Center towers collapsing after the September 11, 2001 attack, seen during a press preview of the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York.
  • A New York Fire Department ambulance, is seen during a press preview of the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York.
  • Artifacts from Ground Zero, including part of a television and radio antenna from the North Tower, is viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City.
  • A quote from Virgil seen during a press preview of the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York.
  • An American Flag recovered from the World Trade Center site is viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City.
  • The symbolic Last Column (R), a steel beam from one of the World Trade Center towers, stands near the Slurry Wall (L), which holds back the Hudson River waters, seen during a press preview of the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York.
  • The salvaged tridents from the World Trade Center are viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City.
  • A destroyed fire department ambulance from Ground Zero is viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City.
  • Artifacts from Ground Zero is viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City.
  • Dust, ash and debris from the collapsed Twin Towers are viewed on the clothes from the store Chelsea Jeans in an exhibit at viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City.
  • The 'Survior Stairs', remnants of a Vesey Street staircase where many people who worked at the World Trade Center towers during the September 11, 2001 attack escaped to the street, seen during a press preview of the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York.