Situated in the high-tech business district of Northern Virginia, just off I-66 and Route 123, Flint Hill Office Park features four facilities totaling about 500,000 s.f.  One Flint Hill is a 6-story, 130,000 s.f. office building.  Two Flint Hill is a 2-story, 90,000 s.f. office building that was sold to investors after completion.  Three Flint Hill is an 8-story, 160,850 s.f. office building that was sold to Chalmers Property Company in 2009.  Four Flint Hill is a 160,000 s.f. office building.  Major tenants include Lockheed Martin and General Dynamics.