38 : Professional Solutions LLC
| Location: | Alexandria, Va. |
| Annual growth rate: | 79.07% |
| 2010 revenue: | $42,629,348 |
| 2009 revenue: | $28,799,581 |
| 2008 revenue: | $15,411,860 |
| 2007 revenue: | $10,002,435 |
| 2006 revenue: | $4,145,679 |
| Leadership: | Michael J. Dean, CEO |
| Number of employees: | 308 |
| Web site: | http://www.prosol1.com |
| Major customers: | Defense, Marines Corps, Commerce, Homeland Security, VA and Labor Department |