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American Science and Engineering, Inc. (AS&E) is engaged in developing, manufacturing, marketing and selling X-ray inspection and other detection products. The Company manufactures X-ray inspection products that can be used to inspect parcels, baggage, vehicles, pallets, cargo containers and people. The Company offers its products for homeland security, force protection, public safety and other critical defense and security applications. The Company's products and services are grouped into approximately five areas: cargo inspection systems, which include OmniView Gantry System, Z Portal System, Sentry Portal System, CarView System and ASE Connect; mobile cargo inspection systems, which include Z Backscatter Van; parcel and personnel screening inspection systems, which include Gemini System, SmartCheck System and MINI Z System; custom products, and service and support.

Orbital Infrastructure Group, Inc. provides infrastructure services to customers in the electric power, telecommunications, and renewable industries. It engineers, designs, installs, upgrades, repairs, and maintains electric power transmission and distribution infrastructure, and substation facilities, as well as offers emergency restoration services; and provides drilled shaft foundation construction services to the electric transmission and substation, industrial, telecommunication, and disaster restoration market sectors. The company also offers engineering, design, construction, and maintenance services to the broadband and wireless telecommunication industries; enterprise solutions to the cable and telecommunication industries; and telecommunication services, such as various wireless service capabilities, as well as aerial installation, directional drilling, trenching, plowing, and missile crews for telecommunications, power, gas, water, CCTV, ATMS, and traffic signal cable installation. In addition, it provides engineering, procurement, and construction services that support the development of renewable energy generation focused on utility-scale solar construction. The company was formerly known as Orbital Energy Group, Inc. and changed its name to Orbital Infrastructure Group, Inc. in August 2022. Orbital Infrastructure Group, Inc. was incorporated in 1998 and is headquartered in Houston, Texas. On August 23, 2023, Orbital Infrastructure Group, Inc., along with its affiliates, filed a voluntary petition for reorganization under Chapter 11 in the U.S. Bankruptcy Court for the Southern District of Texas.

Unitil Corporation, a public utility holding company, engages in the distribution of electricity and natural gas. It operates through two segments, Utility Electric Operations, Utility Gas Operations. The company distributes electricity in the southeastern seacoast and state capital regions of New Hampshire, and the greater Fitchburg area of north central Massachusetts; and distributes natural gas in southeastern New Hampshire and portions of southern and central Maine, including the city of Portland and the Lewiston-Auburn area, as well as electricity and natural gas in the greater Fitchburg area of north central Massachusetts. It also operates 86 miles of interstate underground natural gas transmission pipeline that provides interstate natural gas pipeline access and transportation services primarily in Maine and New Hampshire. In addition, the company provides real estate management services. It serves approximately 108,100 electric customers and 87,500 natural gas customers. Unitil Corporation was incorporated in 1984 and is headquartered in Hampton, New Hampshire.