11 : Halfaker and Associates LLC
| Location: | Arlington, Va. |
| Annual growth rate: | 153.32% |
| 2010 revenue: | $15,127,993 |
| 2009 revenue: | $13,156,647 |
| 2008 revenue: | $9,582,130 |
| 2007 revenue: | $2,246,791 |
| 2006 revenue: | $367,390 |
| Leadership: | Dawn Halfaker, president and CEO |
| Web site: | http://www.halfaker.com |
| Major customers: | Defense Department, DHS, Army, Air Force, Navy and Veterans Affairs |