Northrop Grumman Corp., Chandler, Arizona, is being awarded a $52,486,564 modification (P00022) to a previously awarded (HQ0851-22-9-0002) agreement to exercise an option. The value of this contract is increased from $239,372,502 to $291,859,066. Under this modification, the contractor will continue to develop and refine their Glide Phase Intercept concept during the Technology Development Phase. The work will be performed in Chandler, Arizona; Colorado Springs, Colorado; Huntsville, Alabama; San Diego, California; Boulder, Colorado; and Linthicum, Maryland. The performance period is from Nov. 15, 2023, through Feb. 15, 2025. Fiscal 2024 research, development, test, and evaluation funds in the amount of $16,000,000 are being obligated on this award. The Missile Defense Agency, Dahlgren, Virginia, is the contracting activity.