The Lockheed Martin Corp., Rotary and Mission Systems, Mitchell Field, New York, is awarded a $45,943,764 cost-plus-incentive-fee and cost-plus-fixed-fee contract modification (P00031) to a previously awarded and announced contract (N00030-20-C-0045) for the U.S. and United Kingdom to provide Strategic Weapon System Trident Fleet Support, Trident II SSP Shipboard Integration (SSI) Increment 8, SSI Increment 16, Columbia-class and U.K. Dreadnought-class navigation subsystem development efforts. Work will be performed in Mitchell Field, New York (47%); Huntington Beach, California (36%); Clearwater, Florida (9%); Cambridge, Massachusetts (6%); and Hingham, Massachusetts (2%), with an expected completion date of November 30, 2023. Fiscal 2022 operation and maintenance (Navy) funds in the amount of $38,900,389; fiscal 2022 shipbuilding and conversion (Navy) funds in the amount of $6,504,130; and fiscal 2022 research, development, test and evaluation (Navy) funds in the amount of $539,245 are anticipated to be available and will be obligated as they become available via contract modification. No funds will expire at the end of the current fiscal year. This contract was a sole-source acquisition in accordance with 10 U.S. Code 2304(c)(1) and (4). Strategic Systems Programs, Washington, D.C., is the contracting activity.