The Department of Energy’s Office of Environmental Management has awarded a $2.3 billion operations and site mission support services contract for the Portsmouth Paducah Project Office (PPPO) to Mission Conversion Services Alliance (MCSA), a limited liability company made up of Atkins Nuclear Secured, Westinghouse Government Services, and Jacobs Technology, with Swift & Staley and Akima Centerra Integrated Services as teaming subcontractors.