Raytheon Co., Tewksbury, Massachusetts, is being awarded a $72,117,547 modification to previously-awarded contract N00024-17-C-5145 to exercise options for DDG 1000 ship class integrated logistics support and engineering services. The DDG 1000 ship class is a multi-mission surface combatant designed to fulfill volume firepower and precision strike requirements. DDG 1000 combat systems provide offensive, distributed and precision firepower and long ranges in support of forces ashore, while incorporating signature reduction, active and passive self-defense system and enhanced survivability features. Work will be performed in Portsmouth, Rhode Island (40 percent); San Diego, California (28 percent); Tewksbury, Massachusetts (24 percent); Marlboro, Massachusetts (2 percent); Ft. Wayne, Indiana (2 percent); Bath, Maine (2 percent); St. Petersburg, Florida (1 percent); and Nashua, New Hampshire (1 percent), and is expected to be completed by September 2019. Fiscal 2019 shipbuilding and conversion (Navy); fiscal 2019 operations and maintenance (Navy); and fiscal 2019 research, development, test and evaluation (Navy) funding in the amount of $81,555,802 will be obligated at time of award, and $8,816,581 will expire at the end of the current fiscal year. The Naval Sea Systems Command, Washington, District of Columbia, is the contracting activity.