The Lockheed Martin Corp., Rotary and Mission Systems, Mitchell Field, New York, is awarded a $7,924,721 cost-plus-incentive-fee and cost-plus-fixed-fee contract modification (P00030) 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 Strategic Systems Programs shipboard Integration (SSI) Increment 8, SSI Increment 16, Columbia-class and U.K. Dreadnaught-class navigation subsystem development efforts. Work will be performed in Mitchel Field, New York (47%); Huntington Beach, California (36%); Clearwater, Florida (9%); Cambridge, Massachusetts (6%); and Hingham, Massachusetts (2%), with an expected completion date of Nov. 30, 2023. Fiscal 2021 operation and maintenance (Navy) funds in the amount of $7,924,721 will be obligated. 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.