The MITRE Corporation’s Colshire Drive campus includes a 2.9-acre parcel directly opposite the “McLean (East Tysons)” station on the Metro’s new Silver Line. Fairfax County has approved MITRE’s plans for construction of an additional  340,000 square foot  office building and garage. When complete, the building will allow MITRE to consolidate onto its existing campus employees presently housed in leased office space elsewhere in the Tysons area.