The National Aeronautics and Space Administration (NASA) is seeking to justify a sole-source contract for the James Webb Space Telescope (JWST) Phase E Operations and Sustainment, specifically with Northrop Grumman Systems Corporation (NG). This contract will ensure continuous operational support for the JWST mission for 4.5 years following the initial six months post-launch, leveraging NG's unique expertise as the prime contractor responsible for the telescope's design, development, integration, and testing. The decision to award this contract without full and open competition is based on NG's exclusive knowledge of the specialized hardware and software required for the JWST, which is critical for maintaining the observatory's health and safety. For further inquiries, interested parties can contact Bruce Tsai at Bruce.B.Tsai@nasa.gov or by phone at 240-684-0428.