The IT staff for the National Science Foundation (NSF) started moving over the July 4th holiday into their new headquarters at 2415 Eisenhower Avenue while the official move-in begins August 24th to be completed by early October.  The NSF will occupy a new 667,759 SF LEED Silver-certified, built-to-suit office building directly across from the Eisenhower Avenue Metro Station in the greater Carlyle area.  NSF is an independent federal agency with the mission to promote the progress of science.  Each year, NSF supports an average of 200,000 scientists, engineers, educators and students from U.S. institutions that work at universities, laboratories, and field sites all over the world. Their grants program produces 30,000 site visits per year.  NSF employs approximately 2,100 professionals at their headquarters.