NASA's National Aeronautics and Space Administration (NASA) is seeking qualified vendors to provide hypobaric chamber services for decompression sickness testing related to exercise countermeasures. The procurement aims to support the development of the Aerospace Estimation Tool for Hypobaric Exposure Risk (AETHER), which involves recruiting subjects for experimental conditions simulating extravehicular activities (EVAs) to investigate the effects of exercise as a mitigation strategy for decompression sickness. This initiative is critical for informing future space vehicle and mission requirements, emphasizing the importance of safety and data quality in the testing process. Interested vendors must reference tracking number 80NSSC26920179Q-1 in their email submissions and direct inquiries to Shanna Patterson at shanna.l.patterson@nasa.gov, as the procurement is firm fixed price and requires strict adherence to specified protocols and operational standards.