Raytheon Missile and Defense, Tucson, Arizona, is being awarded a $13,786,171 cost-plus-fixed-fee, sole-source contract modification (P00200) to HQ0276-10-C-0005. This award will increase the total dollar value of the contract from $2,128,423,088 to $2,142,209,259. Under the contract, the contractor will perform Software Upgrade Build 8.2 to the Standard Missile-3 Block IIA Aegis Weapons System. The work will be performed in Tucson, Arizona. The performance period is from Sept. 30, 2021, through May 31, 2022. Fiscal 2021 research, development, test and evaluation funds in the amount of $13,786,171 will be used to fund this effort. The Missile Defense Agency, Dahlgren, Virginia, is the contracting activity.