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Pentagon Office
3600 Defense Pentagon
Rm. 3E185
Washington, DC  20301-3600
Phone: 571.256.7791 
Email: osd.business.defense@mail.mil 

Directions to the Pentagon


Mark Center Office
4800 Mark Center Drive
Suite 15G13 – East Tower
Alexandria, VA  22350
Phone: 571.372.6191 
Email: osd.business.defense@mail.mil 

Directions to the Mark Center