You could barely hear this sleek aircraft as it flew overhead

The following table shows the top contractors to the United States Government as published by the U.S. General Services Administration. Dollar amounts are in USD millions. Companies with “N/A” listed under market cap are not publicly-traded (or are subsidiaries of publicly-traded parent companies.)

CompanyHeadquartersIndustry2017 Contract Value Market Cap LTM Revenue Trailing P/E
Vectrus Systems Corp (sub. of Vectrus Inc)USA-CO-Colorado SpringsBusiness Services$1,010,000,000$265,000,000$1,250,000,00004.0x
KBR IncUSA-TX-HoustonConstruction & Engineering$1,516,000,000$2,427,000,000$4,520,000,00005.6x
AT&TUSA-TX-DallasTelecom Services$803,000,000$224,672,000,000$164,440,000,00005.9x
Verizon CommunicationsUSA-NY-New YorkTelecom Services$689,000,000$239,740,000,000$130,540,000,00007.4x
Hewlett Packard Enterprise CompanyUSA-CA-Palo AltoCommunication Equipment$1,094,000,000$19,917,000,000$30,850,000,00009.2x
Fedex CorporationUSA-TN-MemphisShipping & Logistics$613,000,000$44,636,000,000$68,720,000,00009.3x
Cardinal Health IncUSA-OH-DublinMedical Distribution$734,000,000$14,179,000,000$139,380,000,00009.5x
AmerisourceBergen CorpUSA-PA-ChesterbrookMedical Distribution$2,220,000,000$16,226,000,000$167,940,000,00009.6x
Pfizer Inc.USA-NY-New YorkDrug Manufacturing$1,133,000,000$247,867,000,000$53,370,000,00010.4x
Oshkosh CorporationUSA-WI-OshkoshTruck Manufacturing$1,526,000,000$4,827,000,000$7,710,000,00010.9x
CACI InternationalUSA-VA-ArlingtonInfo Tech Services$2,437,000,000$37,179,000,000$4,550,000,00011.2x
Insight EnterprisesUSA-AZ-TempeInfo Tech Services$692,000,000$1,533,000,000$7,120,000,00011.6x
Royal Dutch Shell plcEU-Netherlands-The HagueOil & Gas$736,000,000$249,144,000,000$371,570,000,00011.8x
Leonardo SpaEU-Italy-RomeAerospace & Defense$943,000,000$5,306,000,000$11,610,000,00012.3x
Huntington Ingalls IndustriesUSA-VA-Newport NewsAerospace & Defense$7,245,000,000$8,356,000,000$7,970,000,00012.5x
McKesson CorpUSA-CA-San FranciscoMedical Distribution$8,796,000,000$23,867,000,000$210,930,000,00013.3x
Leidos HoldingsUSA-VA-RestonInfo Tech Services$4,788,000,000$8,300,000,000$10,060,000,00014.3x
Science Applications International CorpUSA-VA-RestonInfo Tech Services$3,456,000,000$2,755,000,000$4,600,000,00014.4x
General Dynamics CorpUSA-VA-Falls ChurchAerospace & Defense$15,337,000,000$48,512,000,000$34,090,000,00016.0x
L3 TechnologiesUSA-NY-New YorkAerospace & Defense$5,151,000,000$13,818,000,000$10,050,000,00016.1x
Northrop Grumman CorpUSA-VA-Falls ChurchAerospace & Defense$11,195,000,000$44,455,000,000$28,290,000,00016.4x
AECOMUSA-CA-Los AngelesConstruction & Engineering$4,108,000,000$4,564,000,000$20,160,000,00016.4x
Mantech International CorpUSA-VA-FairfaxSoftware Applications$755,000,000$2,161,000,000$1,920,000,00016.5x
General Electric CompanyUSA-MA-BostonDiversified Industrials$2,473,000,000$77,761,000,000$122,170,000,00017.1x
United Technologies CorporationUSA-CT-FarmingtonAerospace & Defense$2,458,000,000$94,929,000,000$64,140,000,00017.7x
The Geo GroupUSA-FL-Boca RatonPrison Operator$528,000,000$2,677,000,000$2,300,000,00018.0x
CDW CorporationUSA-IL-ChicagoInfo Tech Services$848,000,000$12,087,000,000$16,280,000,00018.4x
Raytheon CompanyUSA-MA-WalthamAerospace & Defense$14,658,000,000$45,296,000,000$26,480,000,00018.6x
Humana Inc.USA-KY-LouisvilleHealth Care Plans$3,715,000,000$38,888,000,000$55,930,000,00018.9x
Booz Allen Hamilton Holding CorpUSA-VA-McLeanBusiness Services$4,090,000,000$6,647,000,000$6,370,000,00019.1x
International Business Machines CorpUSA-NY-ArmonkInfo Tech Services$1,156,000,000$110,382,000,000$80,370,000,00019.3x
UnitedHealth GroupUSA-MN-MinnetonkaHealth Care Plans$3,050,000,000$238,257,000,000$219,890,000,00019.4x
Textron IncUSA-RI-ProvidenceAerospace & Defense$1,463,000,000$11,665,000,000$14,240,000,00019.8x
Sanofi SAEU-France-ParisPharmaceuticals$705,000,000$105,284,000,000$34,970,000,00020.1x
BAE Systems plcUK-HampshireAerospace & Defense$5,288,000,000$20,134,000,000$17,570,000,00020.9x
The Boeing CompanyUSA-IL-ChicagoAerospace & Defense$23,362,000,000$200,407,000,000$96,940,000,00021.1x
Harris CorporationUSA-FL-MelbourneCommunication Equipment$3,194,000,000$16,440,000,000$6,310,000,00021.5x
Fluor CorporationUSA-TX-IrvingConstruction & Engineering$1,672,000,000$5,154,000,000$19,390,000,00022.1x
Accenture Inc.Ireland-DublinInfo Tech Services$1,693,000,000$97,417,000,000$42,320,000,00022.5x
Serco Group plcUK-HampshireBusiness Services$626,000,000$1,472,000,000$2,810,000,00022.9x
Lockheed Martin CorpUSA-MD-BethesdaAerospace & Defense$50,696,000,000$78,994,000,000$54,280,000,00026.3x
Glaxosmithkline plcUK-MiddlesexDrug Manufacturing$921,000,000$97,750,000,000$30,260,000,00027.5x
Rolls-Royce Holdings plcUK-LondonAerospace & Defense$776,000,000$21,355,000,000$17,140,000,00028.7x
Engility HoldingsUSA-VA-ChantillyStaffing & Outsourcing Services$791,000,000$1,076,000,000$1,930,000,00031.5x
Centene CorporationUSA-MO-St. LouisHealth Care Plans$2,604,000,000$24,738,000,000$56,360,000,00032.1x
Honeywell International IncUSA-NJ-Morris PlainsDiversified Industrials$2,381,000,000$101,743,000,000$42,920,000,00036.5x
Jacobs Engineering Group Inc.USA-TX-DallasConstruction & Engineering$1,189,000,000$8,607,000,000$14,980,000,00047.2x
Merck & Co. Inc.USA-NJ-KenilworthDrug Manufacturing$1,768,000,000$194,768,000,000$41,730,000,00050.1x
Bechtel GroupUSA-CA-San FranciscoConstruction & Engineering$5,530,000,000$32,900,000,000
CSRA Inc (sub. of General Dynamics)USA-VA-FairfaxInfo Tech Services$2,945,000,000
General Atomic Technologies CorporationUSA-CA-San DiegoAerospace & Defense$2,663,000,000
Alliant Techsystems (sub. of ATK Orbital)USA-VA-ArlingtonAerospace & Defense$2,549,000,000
National Technology & Engineering Solutions of Sandia LLC (sub. of Honeywell)USA-NM-AlbuquerqueResearch & Development$2,527,000,000
Bell Boeing Joint Project Office (Bell & Boeing Partnership)USA-MO-St. LouisAerospace & Defense$2,510,000,000
Los Alamos National Security LLCUSA-CA-Los AlamosResearch Firm$2,470,000,000
Triwest Healthcare Alliance Corp.USA-AZ-PhoenixHealthcare Benefits Administration$2,444,000,000
California Institute of TechnologyUSA-CA-PasadenaResearch University$2,361,000,000
Consolidated Nuclear Security LLC (Bechtel, Leidos, ATK Orbital, SOS & Booz)USA-TN-Oak RidgeUranium Processing$2,342,000,000
Battelle Memorial InstituteUSA-OH-ColumbusResearch Firm$2,337,000,000$6,200,000,000
United Launch Alliance LLC (Lockheed & Boeing JV)USA-CO-CentennialAerospace & Defense$2,249,000,000
Health Net Inc. (sub. of Centene)USA-CA-Woodland HillsHealth Care Plans$2,109,000,000
Lawrence Livermore National Security (Bechtel, BWX, AECOM, Battelle, Texas A&M)USA-CA-LivermoreResearch & Development$1,740,000,000
B.L. Harbert Holdings LLCUSA-AL-BirminghamConstruction & Engineering$1,679,000,000$1,250,000,000
Cerberus Capital Management LP (DynCorp Int'l)USA-NY-New YorkSecurity & Training$1,664,000,000
Atlantic Diving Supply (aka ADS Inc)USA-VA-Virginia BeachEquipment and Procument$1,638,000,000
Chemonics International IncUSA-DC-WashingtonInternational Trade & Development$1,638,000,000
The Mitre CorporationUSA-MA-BedfordResearch & Development$1,501,000,000
UT–Battelle (Univ of TN & Battelle Partnership)USA-TN-Oak RidgeResearch & Development$1,482,000,000
Deloitte LLPUK-LondonProfessional Services$1,453,000,000$43,200,000,000
State Of CaliforniaUSA-CAResearch & Development$1,285,000,000
Sierra Nevada CorporationUSA-NV-SparksAerospace & Defense$1,223,000,000
Caddell Construction Co. Inc.USA-AL-MontgomeryConstruction & Engineering$1,202,000,000
Space Exploration Technologies Corp (aka SpaceX)USA-CA-HawthorneAerospace & Defense$1,123,000,000
PAE Holding CorpUSA-VA-ArlingtonInternational Trade & Development$1,075,000,000
Massachusetts Institute Of TechnologyUSA-MA-CambridgeResearch & Development$1,073,000,000
Johns Hopkins UniversityUSA-MD-BaltimoreResearch & Development$1,031,000,000
CH2M Hill (sub. of Jacobs Engineering)USA-CO-MeridianConstruction & Engineering$1,011,000,000$5,240,000,000
BP Products North America (sub. of British Petroleum)UK-LondonOil & Gas$1,006,000,000
Savannah River Nuclear Solutions LLCUSA-SC-AikenResearch & Development$974,000,000
The Aerospace CorporationUSA-CA-El SegunoAerospace & Defense$949,000,000
Rockwell Collins (sub. of United Technologies)USA-IA-Cedar RapidsAerospace & Defense$932,000,000
Enterprise Services LLC (sub. of DXC Technology)USA-TX-PlanoInfo Tech Services$921,000,000
Arctic Slope Regional CorporationUSA-AK-BarrowProfessional Services$920,000,000
MacAndrews & Forbes HoldingsUSA-NY-New YorkUndetermined$865,000,000
Denali Holding (Dell Technologies)USA-TX-Round RockInfo Tech Services$846,000,000
Nana Regional CorporationUSA-AK-KotzebueInfo Tech Services$786,000,000
Alion Science And Technology CorporationUSA-VA-McLeanAerospace & Defense$783,000,000
The Parsons CorporationUSA-CA-PasadenaDefense, Security & Infrastructure$766,000,000$3,000,000,000
Carahsoft Technology CorpUSA-VA-RestonInfo Tech Services$646,000,000
Express Scripts Holding (sub. of Cigna)USA-MO-St. LouisPharmacy Benefit Management$642,000,000$100,065,000,000
Advanced Technology International (sub. of ANSER)USA-SC-SummervilleResearch & Development$604,000,000
Leland Stanford Junior UniversityUSA-CA-Palo AltoResearch & Development$603,000,000
Austal LimitedAustralia-HendersonShipbuilder$603,000,000
Patriot TeamUSA-OK-TulsaCharter Airlift Services$597,000,000
Anham FzcoUSA-VA-McLeanSupply Chain Management$579,000,000
Hensel Phelps ConstructionUSA-CO-GreeleyConstruction & Engineering$560,000,000
Brookhaven Science Associates (Stony Brook Univ & Battelle)USA-NY-UptonResearch & Development$538,000,000
Coins 'N Things IncUSA-MA-BridgewaterPrecious Metals Dealer$529,000,000
Corrections Corporation Of AmericaUSA-TN-NashvillePrison Operator$527,000,000
S&K Aerospace LLCUSA-MT-St. IgnatiusAerospace & Defense$522,000,000

Notes:
Table does not include the New York Federal Reserve Bank as depository and agent managing the Exchange Stabilization Fund.
LTM stands for last twelve months.
Blank entries mean the company does not publicly report its financials, so the information is not available.

Sources:
U.S. General Services Administration’s Federal Procurement Data System
Financial data from Morningstar Inc., as of January 11, 2019
Revenue information for privately held companies sourced from Wikipedia.org