The Boeing Co., Mesa, Arizona, was awarded a $39,478,219 modification (PZ0017) to Foreign Military Sales (Saudi Arabia) contract W58RGZ-17-C-0031 for post-production system support, which includes integrated product support, of the AH-64 aircraft in support of the Saudi Arabia National Guard. Work will be performed in Mesa, Arizona; Hazelwood, Missouri; and Riyadh, Saudi Arabia, with an estimated completion date of April 29, 2020. Fiscal 2019 foreign military sales funds in the amount of $39,478,219 were obligated at the time of the award. Army is the contracting activity.