Lockheed Martin Corp., Missiles and Fire Control, Dallas, Texas, is being awarded a $19,161,388 modification (P00085) to a previously awarded contract (HQ0147-17-C-0032) for the acquisition of Terminal High Altitude Area Defense (THAAD) Configuration 3.1 Part A Ground Modernization equipment to support the U.S. government. The THAAD Configuration 3.1 Part A, and associated labor and equipment, will be procured under a firm-fixed-price contract line item. The value of this contract is increased from $8,333,902,562 to $8,353,063,950. The work will be performed in Dallas, Texas; Sunnyvale, California; Huntsville, Alabama; Camden, Arkansas; and Troy, Alabama, with an expected completion date of Jan. 1, 2027. Fiscal 2023 and fiscal 2024 U.S. government procurement funds in the amount of $19,161,388 are being obligated at time of award. The Missile Defense Agency, Huntsville, Alabama, is the contracting activity.