Northrop Grumman Systems Corp., Huntsville, Alabama, is being awarded a $244,675,813 modification to a previously awarded indefinite-delivery/indefinite-quality contract (HQ014718D0005). The contract modification will continue the development, integration, testing and fielding of complex advanced discrimination techniques, operation and sustainment of complex modeling and simulation techniques and tools used to model Ballistic Missile Defense System capabilities. The work will be performed in Huntsville, Alabama; Colorado Springs, Colorado; Boulder, Colorado; and Azusa, California, and is expected to be completed by March 4, 2026. There will be no funding obligated to associated task orders at time of award. The Missile Defense Agency, Huntsville, Alabama, is the contracting activity.