This Sources Sought Synopsis (SSS) is being conducted to identify potential sources that may possess the expertise, capabilities, and experience to perform This effort is competitive as directed by the Government of Saudi Arabia in accordance with the United States of America LOA, to include all actions that support RSAF F-15 fleet and prevent maintenance delays due to an expendable part shortage. The RSAF operates and supports three variants of the F-15 including C/D models, and the F-15S which was produced in the mid-90s. Recently a new requirement was established for a major F-15 Fleet Modernization Program (FMP). The program includes advanced systems and weapons delivery capabilities designed to significantly improve the lethality, reliability, and survivability of the RSAF F-15 fleet. As a result, 84 F-15SA new production aircraft were ordered from Boeing, the single qualified source. In addition to the new production aircraft, up to 70 existing S model aircraft are currently in the process of being converted. The resulting larger fleet (approximately 230 aircraft) of C/D and SA aircraft will require a continuation of support far into the future. The Government will not reimburse participants for any expenses associated with their participation in this survey.