My DD's asthma waivers were denied by USNA (conditional USNA prep school offer) and USMMA (recruited athlete) last year. She failed the MCT at 20.1%. MCT was done by a DoDMERB-approved provider who also provided a letter stating that she saw no reason why DD couldn't serve. DD later received an AROTC scholarship which is also on hold because that medical waiver was ultimately denied. Her cadre is amazing and encouraged her to submit an appeal and get a Pulmonary Function Test, which she recently had, and a letter from the pulmonologist stating that there's no reason she can't serve. Honestly, I would absolutely recommend getting the Pulmonary Function Test done in addition to the MCT - even if you have to pay for the PFT out of pocket - I wish we had thought of it last year! Wishing your DS the best!