| United States Department of Agriculture |
57,134 |
| United States Postal Service |
25,674 |
| The National Cancer Institute |
25,079 |
| Johns Hopkins University |
20,693 |
| United States Department of Health and Human Services |
20,092 |
| National Park Service |
16,058 |
| United States Navy |
15,971 |
| United States Army |
14,793 |
| National Institutes of Health (NIH) |
14,704 |
| Hilton Worldwide |
13,908 |
| Indian Health Service |
11,980 |
| Lockheed Martin Corporation |
11,875 |
| Marriott International Inc. |
11,375 |
| Computer Sciences Corporation |
10,819 |
| University Of Maryland |
9,864 |
| United States Air Force |
9,467 |
| US General Services Administration (GSA) |
8,948 |
| SAIC |
8,552 |
| United States Department of Energy |
8,530 |
| United States Department of the Interior |
8,525 |
| Fairfax County Public Schools |
8,427 |
| Georgetown University |
8,137 |
| USDA Agricultural Research Service |
7,865 |
| United States Department of Homeland Security |
7,231 |
| Northrop Grumman Corporation |
6,951 |
| U.S. House of Representatives |
6,718 |
| Montgomery County Public Schools |
6,117 |
| National Aeronautics and Space Administration |
5,563 |
| George Washington University |
5,543 |
| USDA Foreign Agricultural Service (FAS) |
5,338 |
| Montgomery County, Maryland |
5,182 |
| United States Environmental Protection Agency |
5,180 |
| National Oceanic and Atmospheric Administration |
5,164 |
| United States Department of Justice |
5,155 |
| United States Geological Survey |
4,133 |
| Virginia Polytechnic Institute and State University |
4,027 |
| Capital One Financial Corporation |
3,895 |
| George Mason University |
3,590 |
| US Department of Housing and Urban Development |
3,555 |
| US Army Corps of Engineers |
3,331 |
| Arlington Career Center |
3,329 |
| United States Marine Corps (USMC) |
3,188 |
| State of West Virginia Department of Education |
3,171 |
| American Red Cross |
3,097 |
| District of Columbia |
3,087 |
| United States Internal Revenue Service (IRS) |
2,960 |
| XO Communications |
2,868 |
| Federal Home Loan Mortgage Corporation (Freddie Mac) |
2,798 |
| National Science Foundation |
2,745 |
| United States Army |
2,696 |
| United States Dept of Defense Logistics Agency |
2,679 |
| West Virginia University Robert C. Byrd Health Sciences Center |
2,611 |
| US Department of Labor |
2,539 |
| Long & Foster Real Estate, Inc. |
2,506 |
| US Department of Transportation |
2,432 |
| General Dynamics Corporation |
2,420 |
| The Ritz-Carlton Hotel Company, L.L.C. |
2,390 |
| SRA International, Inc. |
2,385 |
| University of Maryland School of Nursing |
2,369 |
| Booz Allen Hamilton Inc. |
2,320 |
| USDA Animal and Plant Health inspection Service |
2,307 |
| Alexandria City Public Schools |
2,238 |
| Prince George's County Public Schools |
2,236 |
| Northern Virginia Community College |
2,192 |
| Baltimore County Public Schools |
2,184 |
| Sodexo, Inc. |
2,180 |
| Federal Bureau of Prisons |
2,179 |
| University of Maryland, Baltimore |
2,177 |
| CACI International Inc. |
2,137 |
| Federal Communications Commission |
2,128 |
| Aerotek, Inc. |
2,104 |
| Choice Hotels International, Inc. |
2,096 |
| DynCorp International |
2,058 |
| United States Department of the Treasury |
2,051 |
| Stafford County Public Schools |
2,051 |
| Defense Information Systems Agency |
2,034 |
| Towson University |
2,033 |
| Prince William County School Board Public Schools |
1,998 |
| GEICO |
1,940 |
| TEKsystems, Inc. |
1,927 |
| The MITRE Corporation |
1,924 |
| Wilmer Cutler Pickering Hale and Dorr LLP |
1,908 |
| Cecil County Public Schools |
1,899 |
| United States Agency for International Development |
1,864 |
| General Dynamics Information Technology |
1,771 |
| Alliant Techsystems Inc. |
1,715 |
| Airbus Americas, Inc |
1,687 |
| Gannett Co., Inc. |
1,674 |
| Montgomery College |
1,664 |
| Howard University |
1,648 |
| THE WORLD BANK |
1,622 |
| West Virginia State |
1,581 |
| Maryland Department of Health and Mental Hygiene |
1,574 |
| Advance Auto Parts, Inc |
1,564 |
| Federal National Mortgage Association (Fannie Mae) |
1,562 |
| ICF International, Inc. |
1,543 |
| Carilion Clinic |
1,535 |
| Hughes Network Systems, LLC |
1,534 |
| American University Washington D.C. |
1,522 |
| US Bankruptcy Courts |
1,487 |
| Johns Hopkins Bloomberg School of Public Health |
1,428 |
| Anne Arundel Community College |
1,428 |
| CIENA Corporation |
1,405 |
| MedImmune, LLC |
1,398 |
| US Department of State |
1,378 |
| Federal Deposit Insurance Corporation |
1,363 |
| Loyola University Maryland |
1,361 |
| Navy Bureau of Medicine and Surgery |
1,317 |
| The Nature Conservancy |
1,313 |
| Alstom (USA) |
1,292 |
| Sunrise Senior Living, Inc. |
1,264 |
| Loudoun County Public Schools |
1,252 |
| ManTech International Corporation |
1,249 |
| MedStar Health |
1,246 |
| US Nuclear Regulatory Commission |
1,246 |
| Board of Education - Carroll County Public Schools |
1,244 |
| United States Department of Education |
1,231 |
| Federal Energy Regulatory Commission |
1,228 |
| W. L. Gore & Associates Inc. |
1,221 |
| Discovery Communications, Inc. |
1,197 |
| US Dept Of Agriculture |
1,191 |
| University of Maryland Eastern Shore |
1,179 |
| West Virginia University |
1,178 |
| Centers for Medicare and Medicaid Services |
1,176 |
| Coppin State University |
1,146 |
| Akin Gump Strauss Hauer & Feld LLP |
1,120 |
| Interstate Hotels & Resorts, Inc. |
1,108 |
| United States Department of Commerce |
1,101 |
| Harford County Maryland |
1,096 |
| National Institute of Standards and Technology |
1,092 |
| Inova Health System |
1,088 |
| Bowie State University |
1,078 |
| Federal Bureau of Investigation |
1,069 |
| The Catholic University of America |
1,063 |
| Patton Boggs LLP |
1,049 |
| General Dynamics Advanced Information Systems |
1,040 |
| AARP |
1,025 |
| County of Fairfax, Virginia |
1,023 |
| US Air Force |
1,009 |
| Anne Arundel County Public Schools |
952 |
| Arnold & Porter LLP |
951 |
| The Carlyle Group |
919 |
| Adventist HealthCare, Inc. |
911 |
| James Madison University |
906 |
| United States Senate |
898 |
| Navy Federal Credit Union |
895 |
| Perdue Farms Incorporated |
895 |
| Orbital Sciences Corporation |
879 |
| Lafarge North America |
871 |
| The National Archives and Records Administration |
869 |
| U.S. Securities and Exchange Commission |
857 |
| Children's National Medical Center |
842 |
| MicroStrategy Incorporated |
841 |
| CareFirst BlueCross BlueShield corp |
826 |
| Constellation Energy Resources, LLC |
824 |
| U.S. Senator for Alabama Jeff Sessions |
823 |
| Washington and Lee University |
816 |
| GTSI |
776 |
| GXS |
772 |
| The Corporate Executive Board Company |
767 |
| The Library of Congress |
763 |
| Neustar |
761 |
| ePlus Inc. |
760 |
| T. Rowe Price |
754 |
| Stevenson University |
739 |
| Blackboard Inc. |
736 |
| University of Baltimore |
735 |
| United States Department of Labor - Bureau of Labor Statistics |
728 |
| Smithsonian Institution |
726 |
| U.S. Census Bureau |
724 |
| Financial Industry Regulatory Authority (FINRA) |
705 |
| United States Bureau of ATF |
678 |
| Maryland State Department of Education |
675 |
| Cable & Wireless Usa, Inc. |
668 |
| Pepco Holdings, Inc. |
667 |
| Serco Inc |
664 |
| AMTRAK |
663 |
| Marshall University |
660 |
| Bureau of Reclamation |
657 |
| National Education Association of The United States |
652 |
| DRS Technologies, Inc. |
651 |
| Vocus Incorporated |
639 |
| Department of Public Safety and Correctional Services |
631 |
| McKenna Long & Aldridge LLP |
623 |
| Corporation for National & Community Service |
617 |
| Headstrong Corporation Ltd |
609 |
| Fairmont State University |
607 |
| ARINC Incorporated |
599 |
| W.R. Grace & Co. |
589 |
| HHS |
584 |
| International Monetary Fund |
584 |
| Defense Contract Management Agency (DCMA) |
576 |
| Radford University |
574 |
| Experis Technology Group |
570 |
| U.S. Department of Transportation Federal Highway Administration |
569 |
| Legg Mason, Inc. |
567 |
| comScore |
556 |
| Howard Community College |
550 |
| SafeNet, Inc. |
549 |
| Cobham Corporate |
548 |
