The former management services unit within AECOM is now a stand-alone, private company called Amentum. Last year, AECOM announced it had sold the unit for $2.4 billion to private-equity firms American Securities and Lindsay Goldberg. The deal closed Jan. 31. In its announcement last year, AECOM said the transaction would make the remaining business a "lower-risk, higher-returning professional services firm focused on its industry-leading design, planning, architecture, engineering, program management and construction management capabilities." The newly separated company announced this...