2010 Top 100
59: GTSI Corp.
| Top 100 Revenue: | $383,844,248 |
| Defense Revenue: | $205,977,488 |
| Civilian Revenue: | $177,866,761 |
| 2009 Revenue: | $761.9 million |
| 2009 Earnings: | $5.5 million |
| 2008 Revenue: | $821.2 million |
| 2008 Earnings: | $7.8 million |
| Number of employees: | 615 |
| Headquarters: | Chantilly, Va. |
| Website: | www.gtsi.com |
| Leadership: | Scott W. Friedlander, president and CEO |
| Ticker: | GTSI |
| Lines of business: | Data center, networking, client, security and IT service management |
| Major customers: | Army, Veterans Affairs Department, National Weather Service, Energy Department, NASA and Internal Revenue Service |
| Major contracts/projects: | GTSI recently completed the Veterans Affairs Department's first national distance learning center in Falling Waters, West Virginia. The company built and integrated the virtual desktop environment to create an on-site and distance learning facility to teach security content to VA's information security and privacy officers. |