NASA's National Aeronautics and Space Administration (NASA) is seeking qualified vendors to provide chamber services for decompression sickness testing related to CO2 countermeasures, as outlined in solicitation number 80NSSC26920246Q-1. The primary objective of this procurement is to conduct hypobaric chamber testing to support the development of the Aerospace Estimation Tool for Hypobaric Exposure Risk (AETHER), which will investigate prebreathe strategies. This testing is crucial for ensuring the safety and effectiveness of aerospace operations involving hypobaric exposure. Interested vendors must submit their quotes referencing the tracking number in the subject line and can contact Shanna Patterson at shanna.l.patterson@nasa.gov for further inquiries. Please note that NASA does not accept payment by credit card.