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Company NameHQ LocationYear Est.EmployeesRevenueLocationsGovt. Clients
SGISSan Diego, California2002501-2,000$100 million to $750 million1911
VerizonAshburn, Virginia198310,000+Above $50 billion1812
Wallach Associates, Inc.Rockville, Maryland1965<25Unknown184
IBMArmonk, New York192410,000+Above $50 billion179
Knowledge Management, Inc.Chelmsford, Massachusetts199826-100Under $100 million173
McMunn Associates, Inc.Herndon, Virginia1992101-500Unknown178
CSSS.NETBellevue, Nebraska1997101-500Under $100 million161
DRS TechnologiesParsippany, New Jersey196810,000+Unknown169
Knowledge Consulting GroupReston, Virginia2000101-500Under $100 million1611
RTGXColumbia, Maryland1997101-500Under $100 million167
Sierra Nevada CorporationSparks, Nevada1994501-2,000$750 million to $1 billion166
Celerity IT LLCMcLean, Virginia2002101-500Under $100 million155
Clovis GroupBethesda, Maryland200026-100Under $100 million154
Concurrent Technologies CorporationJohnstown, Pennsylvania1987501-2,000$100 million to $750 million1512
Day & ZimmermannPhiladelphia, Pennsylvania190110,000+$1 billion to $10 billion152
MacAulay Brown, Inc.Dayton, Ohio1979501-2,000$100 million to $750 million1513
TechnisourceFort Lauderdale, Florida19875,000-10,000Under $100 million152
ThinkEnergyGroup.comNorcross, Georgia2003<25Unknown151
Top Echelon NetworkCanton, Ohio1988<25Under $100 million152
Transquest Federal Systems, Inc.Westlake Village, California199326-100Under $100 million159
ALTA IT Services, LLCRockville, Maryland1985101-500Under $100 million143
Applied Research AssociatesAlbuquerque, New Mexico1979501-2,000$100 million to $750 million147
E-merging Technologies Group, Inc.Cleveland, Ohio199926-100Under $100 million1413
Entegee Engineering Technology GroupBurlington, Massachusetts19582,001-5,000$100 million to $750 million144
Modis, Inc., an Adecco companyJacksonville, Florida19865,000-10,000Unknown144
Sapphire TechnologiesWoburn, Massachusetts2003501-2,000Under $100 million142
C2 Portfolio, Inc.Dulles, Virginia199526-100Under $100 million134
Focus Technology ConsultingRockville, Maryland2007<25Unknown136
McNeil TechnologiesSpringfield, Virginia1985501-2,000$100 million to $750 million1311
NJVC, LLCVienna, Virginia2000501-2,000$100 million to $750 million136
Preferred Systems Solutions, Inc.McLean, Virginia1991101-500Unknown139
Serco North AmericaReston, Virginia199810,000+$750 million to $1 billion1315
Adams Communication & Engineering Technology, Inc.Waldorf, Maryland199926-100Under $100 million123
Advanced C4 Solutions, Inc.Tampa, Florida2002101-500Under $100 million125
Centauri Solutions, LLCAlexandria, Virginia2006101-500Under $100 million128
Josef Group Inc., TheSchenectady, New York1990<25Unknown122
Navstar, Inc.Falls Church, Virginia199926-100Under $100 million128
Parsons CorporationPASADENA, California19445,000-10,000$1 billion to $10 billion122
TSL AssociatesWilson, New York1990<25Unknown121
WyleEl Segundo, California19492,001-5,000$100 million to $750 million128
Accenture, PlcReston, Virginia198910,000+$10 billion to $50 billion1110
Agency Consulting Group, Inc.Columbia, Maryland200426-100Under $100 million115
American Cybersystems, IncTucker, Georgia1998101-500$100 million to $750 million111
Blackbird TechnologiesHerndon, Virginia1997101-500Unknown1110
Convergenz, LLCMcLean, Virginia2000101-500Under $100 million115
Data TacticsAlexandria, Virginia200526-100Under $100 million113
InTecVienna, Virginia200426-100Under $100 million114
Intelligent Software Solutions, Inc.Colorado Springs, Colorado1997101-500Under $100 million1117
Judge GroupWEST CONSHOHOCKEN, Pennsylvania1970501-2,000$100 million to $750 million111
Mindbank Consulting GroupReston, Virginia1986101-500Unknown113

This project was last updated in September 2010. Data is accurate as of that date.
"Top Secret America" is a project nearly two years in the making that describes the huge national security buildup in the United States after the Sept. 11, 2001, attacks. | Read More »

More than a dozen Washington Post journalists spent two years developing Top Secret America. | See the details »


Top Secret America on Frontline

A short video from PBS’s FRONTLINE on The Post’s two-year investigation. An hour-long documentary film is forthcoming. Watch the trailer »

The reporters

Dana Priest

Investigative reporter Dana Priest has been The Washington Post's intelligence, Pentagon and health-care reporter. She has won numerous awards, including the 2008 Pulitzer Prize for public service for "The Other Walter Reed" and the 2006 Pulitzer for beat reporting for her work on CIA secret prisons and counterterrorism operations overseas. She is author of the 2003 book, "The Mission: Waging War and Keeping Peace With America's Military, (W.W. Norton).

William M. Arkin

William M. Arkin has been a columnist and reporter with The Washington Post and since 1998. He has worked on the subject of government secrecy and national security affairs for more than 30 years. He has authored or co-authored more than a dozen books about the U.S. military and national security.

Project Credits

Stephanie Clark, Ben de la Cruz, Kat Downs, Dan Drinkard, Anne Ferguson-Rohrer, Justin Ferrell, David Finkel, Jennifer Jenkins, Robert Kaiser, Laris Karklis, Jacqueline Kazil, Lauren Keane, Todd Lindeman, Greg Manifold, Jennifer Morehead, Bonnie Jo Mount, Larry Nista, Ryan O’Neil, Sarah Sampsel, Whitney Shefte, Laura Stanton, Julie Tate, Doris Truong, Nathaniel Vaughn Kelso, Michael Williamson, Karen Yourish, Amanda Zamora.

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