The Boeing Co., St. Louis, Missouri, has been awarded a maximum $98,000,000 undefinitized delivery order (SPRPA1-21-D-9004) against a five-year basic ordering agreement (SPRPA1-14-D-002U) for vertical replacements in support of the F-15 program. This was a sole-source acquisition using justification 10 U.S. Code 2304 (c)(1), as stated in Federal Acquisition Regulation 6.302-1. Location of performance is Missouri, with a Sept. 29, 2025, performance completion date. Using military service is Air Force. Type of appropriation is fiscal 2021 through 2025 defense working capital funds. The contracting activity is the Defense Logistics Agency Aviation, Philadelphia, Pennsylvania.