NASA Headquarters, officially known as Mary W. Jackson NASA Headquarters or NASA HQ and formerly named Two Independence Square, is a low-rise office building in the two-building Independence Square complex at 300 E Street SW in Washington, D.C. The building houses NASA leadership who provide overall guidance and direction to the US government executive branch agency NASA, under the leadership of the NASA administrator. Ten field centers and a variety of installations around the country conduct the day-to-day work. NASA Headquarters is organized into four Mission Directorates: Aeronautics, Exploration Systems, Science, and Space Operations. The James E. Webb Memorial Auditorium, named for NASA's second administrator James E. Webb, hosts agency news conferences and NASA Social events. A lending library, the history office, archives, production facilities for NASA TV, and a NASA gift shop are also housed in the building.