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U.S. Defense Services

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Tetra Tech is Leading with Science® to address the full installation life cycle, from initial assessments, planning, and design for resilient communities through remediation and closure.

For nearly 60 years, Tetra Tech has provided solutions for the U.S. Department of Defense (DoD), including the Navy, Marines, Air Force, Space Force, and Army. With more than 850 U.S. DoD veterans within the company, we understand the complex challenges that air, naval, and land defense clients face, particularly balancing mission assurance while managing water, energy, infrastructure, and environmental projects. Safety also is part of our core value. Our industry-leading safety performance has resulted in enterprise-wide recordable incident rates that outperform others in our industry.

Tetra Tech is Leading with Science to provide the U.S. DoD with the following services that enable mission assurance:

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U.S. Navy

Tetra Tech has provided services for the U.S. Navy since the late 1960s, beginning with the ARIADNE program, an underwater fiber optic telemetered acoustic detection system. We have performed more than $2 billion in services and work with all component commands in the Naval Facilities Engineering Systems Command (NAVFAC), Naval Air Systems Command (NAVAIR), and Naval Facilities Engineering and Expeditionary Warfare Center.

  • Architect-engineer (A-E) Title I and II
  • Asset management
  • Environmental compliance
  • Energy sustainability and resilience
  • National Environmental Policy Act (NEPA) services
  • Comprehensive Long-term Environmental Action Navy (CLEAN), including PFAS remedial investigations, design, and treatment
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U.S. Air Force and U.S. Space Force

Tetra Tech has performed more than $1 billion in services for the U.S. Air Force and U.S. Space Force, including single task order awards as large as $75 million. We currently hold indefinite delivery, indefinite quantity (IDIQ) contracts with the Air Force Civil Engineer Center (AFCEC), Air Force Technical Applications Center (AFTAC), USAFE-AFAFRICA, multiple U.S. Army Corps of Engineers (USACE) districts, and the National Guard Bureau.

  • A-E Title I and II
  • Fence-to-fence environmental compliance
  • NEPA
  • Performance-based restoration and remediation, including PFAS investigations
  • Information technology and cybersecurity
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U.S. Army

Tetra Tech provides resilient solutions across each USACE district and Army Command. We are actively supporting the rebuild of the United States’ aging infrastructure through programs supporting the Infrastructure Investment and Jobs Act (IIJA) and asset management, including sustainability infrastructure assessments, flood and wind risk planning tools, and installation master planning.

Tetra Tech has performed more than $1.5 billion in projects and currently hold approximately $5 billion in contract capacity. We tackle the Army’s most complex challenges, from net zero energy plans to investigating and mitigating emerging contaminants to designing resilient energy solutions to support Pacific Deterrence Initiative missions.

Tetra Tech employee receiving the SAME Large Business Award from two people
Photo courtesy of Robb Cohen Photography & Video

Small Business Partnerships

Tetra Tech is committed to being an excellent small business partner and mentor, consistent with the use of our Leading with Science approach to best serve our clients. Since 2007, Tetra Tech has subcontracted more than $1 billion to our small business partners. We also have supported them in winning hundreds of millions of dollars of prime contracts on their own.

Across all the markets we serve, we are proud to work with small businesses from every socioeconomic category. The U.S. federal government has recognized Tetra Tech for our proven record and well-defined process to mentor, guide, and train small businesses. We have received numerous awards, including the Dwight D. Eisenhower Award, Nunn-Perry Award, and Society of American Military Engineers (SAME) Large Business Award.

Connect with us. Reach out to our defense services experts.

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Tetra Tech receives the 2021 SAME Large Business Award

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