The 55th Medical Support Squadron (55th MSS) is a United States Air Force unit responsible for providing medical support services to active-duty personnel, their families, and designated units within the host wing or other assigned organizations. It falls under the operational control of Travis Air Force Base in California, where it is stationed. The 55th MSS ensures the readiness and wellbeing of service members by delivering a wide range of medical services, including preventive medicine, dental care, mental health support, pharmacy services, and laboratory services. Its mission is integral to the overall preparedness and effectiveness of U.S. Air Force operations. The squadron also plays an essential role in humanitarian and disaster relief efforts when called upon to deploy overseas.