Northrop Grumman Systems Corp., doing business as Northrop Grumman Mission Systems Sector, Bethpage, New York, is awarded a $697,029,788 indefinite-delivery/indefinite-quantity contract for system upgrades for the EA-18G system configuration sets, Airborne Electronic Attack and Electronic Warfare systems and final upgrades for the EA-6B system for the Navy and the government of Australia under the Foreign Military Sales program. Work will be performed in Pt. Mugu, California (50 percent); Baltimore, Maryland (29 percent); Bethpage, New York (20 percent); and Rolling Meadows, Illinois (1 percent), and is expected to be completed in October 2023. Fiscal 2019 operations and maintenance (Navy) funds in amount of $996,902 are being obligated at time of award, all of which will expire at the end of the current fiscal year. This contract was not competitively procured pursuant to Federal Acquisition Regulation 6.302-1. The Naval Air Warfare Center Weapons Division, Point Mugu, California, is the contracting activity (N68936-19-D-0007).