HII Mission Driven Innovative Solutions Inc., Huntsville, Alabama, is awarded a $16,266,835 cost-plus-fixed-fee modification to exercise Option Period Four under previously awarded contract M95494-17-F-0021. The work to be performed provides Headquarters Marine Corps, Plans, Policies and Operations; Marine Corps Installations Command (MCICOM); and Commander Navy Installations Command with technical and engineering support for the chemical, biological, radiological, nuclear and high-yield explosive consequence management program. Work will be performed in Washington, D.C. (52%); Camp Lejeune, North Carolina (10%); San Diego, California (10%); Quantico, Virginia (10%); Okinawa Prefecture, Japan (5%); Kanagawa Prefecture, Japan (5%); Seoul, Republic of Korea (4%); and Sicily, Italy (4%). Work is expected to be completed in August 2022. Fiscal 2021 operation and maintenance (Marine Corps and Navy) funds in the amount of $5,145,638 will be obligated at the time of award and will expire at the end of the current fiscal year. MCICOM Headquarters, Arlington, Virginia, is the contracting activity.