Lockheed Martin Rotary and Mission Systems, Manassas, Virginia, is awarded a $77,080,643 cost-plus-incentive-fee contract modification to previously awarded contract N00024-17-C-6259 to exercise an option for engineering design and development. Work will be performed in Manassas, Virginia (65%); Clearwater, Florida (32%); Syracuse, New York (2%); and Marion, Florida (1%), and is expected to be completed by December 2022. Fiscal 2021 other procurement (Navy) funds in the amount of $875,676 will be obligated at time of award and not expire at the end of the current fiscal year. The Naval Sea Systems Command, Washington, D.C., is the contracting activity.