AECOM engages in the design, manufacture, financing, and operation of infrastructure assets for governments, businesses, and organizations. It operates through the following segments: Americas, International, and AECOM Capital. The Americas segment deals with planning, consulting, architectural and engineering design, construction management, and program management services to public and private clients in the United States, Canada, and Latin America in major end markets such as transportation, water, government, facilities, environmental, and energy. The International segment focuses on planning, consulting, architectural and engineering design services and program management to public and private clients in Europe, the Middle East, India, Africa, and the Asia-Australia-Pacific regions in major end markets such as transportation, water, government, facilities, environmental, and energy. The AECOM Capital segment is involved in investing and developing real estate projects. The company was founded on January 31, 1980 and is headquartered in Dallas, TX.

MISTRAS Group, Inc. engages in the provision of technology-enabled asset protection solutions. The firm serves the oil and gas, aerospace, power, infrastructure, and manufacturing markets. It operates through the following segments: North America, International Offers Services, and Products and Systems. The North America segment provides asset protection solutions primarily in North America, consisting primarily of non-destructive testing, inspection, mechanical, and engineering services. The International Offers Services segment offers services, products, and systems to markets within Europe, the Middle East, Africa, Asia except, China and South Korea, which are served by the Products and Systems segment, and South America. The Products and Systems segment designs, manufactures, sells, installs, and services the company's asset protection products and systems, including equipment and instrumentation, mainly in the United States. The company was founded by Sotirios J. Vahaviolos in 1978 and is headquartered in Princeton Junction, NJ.

Willdan Group, Inc. engages in the provision of technical and consulting services. It operates through the Energy and Engineering & Consulting segments. The Energy segment offers energy and sustainability consulting services to utilities, public agencies, and private industries. The Engineering and Consulting segment manages civil engineering-related construction management, building and safety, city engineering office management, city planning, civil design, geotechnical, material testing and other engineering consulting services. The company was founded by Dan W. Heil and William Stookey in May 1964 and is headquartered in Anaheim, CA.