The Kleinfelder Group, an engineering, design, construction management, construction materials inspection and testing, and environmental professional services firm, completed the acquisition of Gas Transmission Systems, a provider of engineering services. Financial terms were not disclosed. “As a well-established gas utilities and pipeline services firm, GTS is a strong addition to Kleinfelder. This transaction aligns with our strategic direction and strengthens Kleinfelder’s service capabilities to utilities across the US. The specialized experience GTS brings will accelerate Kleinfelder’s growth in the power/utilities market and position the firm for expansion,” Louis Armstrong, Kleinfelder President and CEO.