United States, June 30 -- Northrop Grumman Systems Corp., Mclean, Virginia, was awarded a ceiling $23,540,188 indefinite-delivery/indefinite-quantity contract for engineering services and technical support to meet mission requirements of the AN/ALR-56M Integrated Support Station and other interfaced systems and processes. This contract provides for the sustainment of the Integrated Support Station and the compilation of systems that create the F-15 Tactical Electronic Warfare System. Work will be performed at Robins Air Force Base, Georgia, and is expected to be completed by June 29, 2035. This contract was a sole source acquisition. Fiscal 2025 operations and maintenance appropriations funds in the amount of $2,455,604 are being obligated ...