Mantech Advanced Systems International, Inc.
Mantech Advanced Systems International, Inc. is a subsidiary of ManTech International Corporation, providing a wide range of technology solutions and services to support national security missions across the U.S. government. The company specializes in areas such as systems engineering, software development, cybersecurity, and program management for defense, intelligence, and federal civilian agencies. As a large business prime contractor, Mantech holds numerous contract vehicles and has received substantial federal contract awards to deliver specialized expertise and technical capabilities to government customers. The company's work spans critical domains including IT modernization, enterprise IT, mission software systems, analytics, defense, and federal civilian solutions.
Through its prime and subcontract awards, Mantech has provided diverse services including engineering support for naval aviation programs, IT operations and maintenance for transportation security systems, cybersecurity monitoring for the Department of Justice, and data readiness services for defense artificial intelligence initiatives. The company has secured major contracts with agencies such as the Navy, Air Force, Defense Health Agency, and Department of Homeland Security. Notable awards include a $622 million task order for training-related services from the Army, a $261 million order for technical support to Air Force combat and spectrum warfare operations, and multiple task orders exceeding $10 million each for IT support to agencies like the Consumer Financial Protection Bureau. Mantech frequently partners with other large contractors like Booz Allen Hamilton and SAIC, as well as small businesses, to deliver comprehensive solutions. These awards typically do not have set-aside designations, as Mantech competes as a large business.
Mantech's involvement in federal grant programs appears more limited, with most activity occurring as a subrecipient. The company has provided natural resource management and conservation services at Vandenberg Air Force Base through subgrants from Colorado State University. This work included tasks such as threatened and endangered species management, habitat restoration, invasive species control, and wetland monitoring in support of the base's Integrated Natural Resources Management Plan. Mantech's role involved making programmatic decisions and recommendations based on their expertise with the base's ecosystems, coordinating directly with Air Force personnel, and adhering to federal regulations governing species and habitat management on military lands. The company has also provided software and system maintenance for civil registration programs at the state level, supporting public health initiatives funded by federal grants.
Mantech holds several significant Indefinite Delivery Vehicles (IDVs) that enable it to compete for and receive task orders across multiple agencies. These include a $900 million IDIQ with the Air Force Life Cycle Management Center for engineering and simulation services, a $487 million Blanket Purchase Agreement with the Department of Justice for IT support services, and a $250 million contract with the Naval Air Warfare Center for rapid prototyping and systems integration. The company is also a holder of government-wide acquisition contracts like Alliant II and ASTRO, allowing it to provide IT and engineering services across federal agencies. Additionally, Mantech was awarded positions on the $60.7 billion VA T4NG2 contract for health IT solutions and a $4.5 billion Air Force contract for security services supporting special access programs. These vehicles demonstrate Mantech's broad capabilities and strong positioning to support diverse government requirements in technology, engineering, and mission support services.
JY2BDT2K58Z6 541512
Not listed 2251 Corporate Park Dr, Herndon, VA 20171, USA
4/11/02 11/6/25 Engility Services, LLC
Engility Services, LLC is a premier technology integrator and subsidiary of Science Applications International Corporation (SAIC) that provides full life cycle services and solutions to government customers in technical, engineering, IT, and intelligence markets. Through its TASC division, Engility serves as a prime contractor on federal contracts spanning engineering, research and development, information technology, and professional services.
As a prime contractor, Engility has provided systems engineering, software development, program management, logistics, and other professional services to the Department of Defense, Department of Homeland Security's Transportation Security Administration, Department of Health and Human Services' Food and Drug Administration, and other agencies. The company has also delivered hardware including communications systems and radar components as a subcontractor to prime partners such as BAE Systems Technology Solutions & Services and General Dynamics Information Technology. Several of Engility's contract awards have been set aside for small business partners.
Engility holds three active indefinite delivery/indefinite quantity contract vehicles. These include platforms for air battle management systems engineering valued at $235 million, ground systems development and sustainment for space and missile programs worth up to $655 million, and carrier integration services under a $99 million IDIQ. Task orders under these IDVs cover areas ranging from aviation systems upgrades to enterprise ground systems services and infrastructure modernization efforts.
HGJ8WM5JMH81 541512
Not listed 2 Tech Dr, Andover, MA 01810, USA
10/4/01 6/24/22 Leidos, Inc.
Leidos, Inc., operating through its Leidos Services Operating Segment Division and doing business as SAIC, is a global leader in information technology, engineering, and science solutions. The company provides a wide range of products and services to U.S. government agencies, primarily focused on national security, health, and infrastructure. Leidos has secured numerous prime and subcontract awards across federal agencies, leveraging its expertise in areas such as research and development, systems integration, IT modernization, logistics, and specialized equipment procurement. The company's diverse portfolio of work spans defense, intelligence, civil, and health markets, positioning it as a key partner in supporting critical government missions and initiatives.
Through its federal contract awards, Leidos has provided an extensive array of goods and services to various agencies. For the Defense Health Agency, Leidos has supported medical research programs, including studies on traumatic brain injury, psychological health, cancer, and rare diseases. The company has also delivered IT and engineering support for the Department of the Air Force, including F-16 AIS/PSI engineering services. For the Naval Sea Systems Command, Leidos has supplied towed array parts, acoustic hoses, and other specialized naval equipment. The company has supported environmental restoration and remediation efforts for the Army Corps of Engineers, conducting site assessments and feasibility studies for hazardous waste cleanup. Leidos has also provided IT consolidation services for Air Force headquarters, oceanographic support for the Naval Meteorology and Oceanography Command, and litigation support services for the Department of Justice. These contracts demonstrate Leidos' versatility in delivering technical, scientific, and administrative solutions across diverse federal sectors.
While Leidos primarily engages in federal contracting, the company has also participated in some grant-funded research activities. One notable example is a subgrant award from the University of North Dakota for a NASA-funded project titled "Estimating Nocturnal Aerosol Optical Depth Using NASA's Black Marble." This work likely involves leveraging Leidos' expertise in data analysis and earth observation technologies to support scientific research in atmospheric studies. Although grant activities appear to be less prevalent in Leidos' federal engagement compared to contracts, this example showcases the company's capability to contribute to academic and scientific research initiatives in collaboration with universities and federal agencies like NASA.
Leidos holds several significant Indefinite Delivery Vehicles (IDVs) that enable it to provide a broad spectrum of services to federal agencies. The company was awarded a $478 million multiple-award IDC by NASA's Johnson Space Center for the Research, Integration, and Mission Integration Services 2 (REMIS2) program, focusing on spaceflight hardware, software, and mission integration services for the International Space Station. The U.S. Army Corps of Engineers Baltimore District granted Leidos a $200 million IDIQ contract for environmental services related to hazardous, toxic, and radioactive waste projects. The Defense Health Agency awarded Leidos a $102 million single-award IDC for meeting, programmatic, and administrative support services for the Congressionally Directed Medical Research Programs. Additionally, Leidos secured a $45 million multiple-award task order contract from the Army Corps of Engineers for architect-engineer environmental services. These IDVs position Leidos to continue providing critical support across various federal agencies, encompassing areas such as space operations, environmental remediation, medical research, and engineering services.
QLNMVC12KWY3 541715
Not listed 1750 Presidents St Fl 10, Reston, VA 20190, USA
1/5/10 2/19/26 American Systems Corporation
American Systems Corporation, doing business as American Systems Corp, is a for-profit Subchapter S corporation that provides professional and technical services to various federal agencies, particularly the Department of Defense, Intelligence Community, and civilian agencies. The company offers a wide range of solutions, including IT solutions, engineering support, program management, cybersecurity, systems integration, training systems, and test and evaluation services. Founded in 1975, American Systems has established itself as a versatile contractor capable of delivering complex technical solutions across multiple domains within the federal government. With a history of serving federal customers since its registration in SAM.gov in 2002, the company has developed a reputation for providing reliable and innovative services to meet the evolving needs of government agencies.
Through its numerous prime and subcontract awards, American Systems Corporation has delivered an array of goods and services to agencies such as the Air Force, Army, Navy, Defense Health Agency, Defense Information Systems Agency, Department of Homeland Security, and NASA. These awards encompass diverse areas like software engineering, aircraft support services, deep submergence systems integration, network operations, test and evaluation, cybersecurity, logistics, and training course development. Notable projects include providing engineering services for naval aviation systems, supporting the Defense Health Agency's Theater Medical Information Program, and delivering technical services for the Office of the Under Secretary of Defense for Research and Engineering. The company has partnered with various subcontractors, including small businesses, to execute these contracts, which range from firm-fixed-price to cost-plus-fixed-fee arrangements, with some utilizing set-aside designations for small businesses.
American Systems Corporation holds several significant indefinite-delivery/indefinite-quantity (IDIQ) contract vehicles that streamline the acquisition of its services across federal agencies. Notable IDVs include the $32.5 billion Training Systems Acquisition IV (TSA IV) for Air Force training systems, the $900 million Air Force Life Cycle Management Center Architecture and Integration Directorate IDIQ for multi-domain systems capabilities, the $1.01 billion Defense Information Systems Agency Test, Evaluation, and Certification II Services contract, and the $9.5 million Specialized Engineering, Aeronautics, and Manufacturing Services (SEAM2) IDIQ with NASA Johnson Space Center. These vehicles facilitate task order awards for services such as software engineering, test and evaluation, network operations, aeronautics research, and systems integration across various Department of Defense and civilian agencies. The company's participation in these IDVs demonstrates its ability to provide a broad spectrum of technical services and its strong positioning within the federal contracting marketplace.
CFWRL5LXXX93 541330
Not listed 14151 Park Meadow Dr #500, Chantilly, VA 20151, USA
4/24/02 2/11/26 HII Mission Technologies Corp
Alion Science And Technology Corporation is a large engineering and technology company that provides a wide range of services to the U.S. federal government, primarily in support of defense and national security missions. As a subsidiary of Huntington Ingalls Industries, Inc., Alion specializes in research, development, test and evaluation (RDT&E), systems engineering, modeling and simulation, cybersecurity, and other advanced technical services. The company has received over $5 billion in prime federal contracts from agencies including the Departments of Defense, Air Force, Army, and Navy to support various programs involving aviation, surface warfare, weapons systems, communications, logistics, and training.
Alion's federal contract work spans numerous critical areas of defense technology and operations. Key services provided include engineering and integration for fighter aircraft and bomber programs, electromagnetic spectrum research and management, development of unmanned aircraft systems, counter-explosive hazard technologies, and advanced training simulators. The company has been awarded major contracts to support initiatives like the F-35 Lightning II Joint Program Office, Navy Continuous Training Environment, and Air Force spectrum management activities. Alion frequently leverages partnerships with subcontractors to deliver specialized equipment, software, and technical expertise. While most contracts are unrestricted awards, Alion occasionally subcontracts to small disadvantaged businesses. Primary customers include the Naval Sea Systems Command, Air Force Life Cycle Management Center, Office of the Secretary of Defense, and various research laboratories and warfare centers across the military branches.
Alion holds two significant indefinite delivery vehicle (IDV) contracts that allow it to compete for and receive task orders from defense agencies. The first is a $1 billion multiple-award Engineering, Procurement, Integration, and Contractor Logistics Support (EPIC) contract with the Air Force, running through 2034. This vehicle enables Alion to provide a broad scope of technical assessment, procurement, integration, and sustainment services. The second is a $50 million single-award IDV with the Naval Air Systems Command to deliver live, virtual, and constructive training and simulation systems through 2024. Under this contract, Alion designs, develops, modifies, and integrates advanced training capabilities for naval aviation and surface warfare applications. These IDVs position Alion as a key industry partner in supporting defense modernization and readiness initiatives across multiple domains.
GS7HBMNZEMK3 541611
Not listed 7501 S Quincy St suite 100, Willowbrook, IL 60527, USA
11/2/10 11/1/25