Prime contractors win the headline award. The real tier-2 opportunity is in what they pass down. See which primes subcontract the most, who the active subs are, and where you plug in.
Lockheed Martin is the largest defense contractor in the world by federal contract obligations, anchored by the F-35 Joint Strike Fighter program, missile systems, and space programs.
RTX (formerly Raytheon Technologies) is a major defense and aerospace prime spanning missiles and defense, Pratt & Whitney engines, and Collins Aerospace systems.
General Dynamics builds combat vehicles, nuclear submarines (Electric Boat), and Gulfstream aircraft, and owns the large IT services arm GDIT.
Boeing is a leading aerospace prime supplying military aircraft, rotorcraft, satellites, and space systems alongside its commercial aviation business.
Northrop Grumman leads programs in strategic deterrence, autonomous systems, space, and the B-21 Raider long-range strike bomber.
BAE Systems Inc. is the US arm of the British defense group, supplying combat vehicles, electronic systems, and ship repair to the US military.
L3Harris is a defense technology prime focused on tactical communications, electronic warfare, space and airborne systems, and ISR.
Leidos is the largest federal IT services contractor, delivering IT modernization, health, defense, and intelligence systems across civilian and defense agencies.
SAIC is a technology integrator focused on IT modernization, enterprise systems, and mission engineering for defense and federal civilian agencies.
Booz Allen Hamilton is a leading management and technology consultancy to the US government, with deep work in defense, intelligence, and AI/analytics.
GDIT is the IT services division of General Dynamics, delivering large-scale IT, cloud, and mission support contracts across defense and federal civilian agencies.
CACI provides expertise and technology in intelligence, defense IT, signals, and enterprise modernization, heavily weighted toward national security customers.
Accenture Federal Services is the US federal arm of Accenture, focused on digital transformation, cloud, data, and AI for federal civilian, defense, and intelligence agencies.
Humana Government Business administers TRICARE health benefits for the military through the Defense Health Agency, one of the largest federal health services contracts.
Huntington Ingalls is the largest US military shipbuilder, constructing aircraft carriers and submarines, and operating a growing technical-services division.
General Atomics is best known for the Predator and Reaper unmanned aircraft families and for nuclear and electromagnetic systems research.
Anduril is a defense technology company building autonomous systems and the Lattice software platform, and a leading example of the new commercial-defense entrants.
Palantir provides data integration and analytics platforms (Gotham, Foundry, AIP) widely used across defense, intelligence, and federal civilian agencies.
SpaceX provides launch services and satellite communications (Starlink) to NASA and the Department of Defense, including national security space launch.
Amentum delivers engineering, technical, and mission-support services across defense, energy, intelligence, and federal civilian programs worldwide.
KBR provides government services in defense, space, and science alongside sustainable technology solutions for energy customers.
Peraton is a national security and technology integrator serving intelligence, space, cyber, defense, and federal health and civilian customers.
ManTech delivers mission-focused technology in cyber, data analytics, cloud, and systems engineering for defense, intelligence, and federal civilian customers.
Jacobs provides engineering, technical, and scientific services across defense, space, environmental, and critical-infrastructure programs.
Parsons delivers national security solutions and critical infrastructure programs spanning cyber, intelligence, missile defense, and engineering.
Maximus operates large federal health and human-services programs, including contact-center and eligibility operations for major civilian agencies.
V2X provides global mission support, base operations, logistics, and aircraft maintenance for the US military and allied customers.
Battelle is a nonprofit applied science and technology organization that manages national laboratories and delivers R&D for defense, health, and energy agencies.
MITRE is a nonprofit that operates federally funded research and development centers (FFRDCs) supporting defense, aviation, cybersecurity, and health agencies.
Chemonics is a Washington-based international development implementer and, until 2025, the largest for-profit prime contractor to USAID by obligated contract value, anchored by the Global Health Supply Chain (GHSC-PSM) program.
Deloitte is a leading management and technology consultancy to the federal government, delivering large modernization, health, and financial-systems programs.
Every prime profile fuses USASpending FSRS subaward filings into a Teaming Opportunity Score: how much of the prime value flows to subs, how many distinct partners they use, the subcontracted NAICS mix, and how recent the activity is. Find the tier-2 door before your competitors do.