The National Aeronautics and Space Administration (NASA) Ames Research Center is seeking to extend the Aeronautics and Exploration Mission Modeling and Simulation (AEMMS) contract with Science and Technology Corporation (STC) on a sole source basis. This extension is necessary to continue critical mission work related to various projects, including Artemis, Air Traffic Management, and Mars Rotorcraft Technology Development, for an additional eight months, from December 1, 2024, through July 31, 2025, if all options are exercised. The Government intends to evaluate capabilities and qualifications from interested organizations to determine if a competitive acquisition is warranted, with submissions due by 5:00 PM PDT on October 2, 2024. For further inquiries, interested parties may contact Rachel Jandron at Rachel.A.Jandron@nasa.gov or Shane Chapman at shane.p.chapman@nasa.gov.