The 309th Aerospace Maintenance and Regeneration Group (AMARG), under the United States Air Force, is a maintenance organization primarily responsible for the storage and long-term preservation of excess, obsolete, or inactive aircraft. Established in 1983 at Davis-Monthan Air Force Base in Tucson, Arizona, this group plays a crucial role in managing the U.S. military’s vast aviation inventory. The 309th AMARG uses a unique process of maintaining and storing aircraft in desert conditions, which includes draining fuel, filling the fuel tanks with nitrogen, and applying protective coatings to prevent corrosion. These preserved aircraft can be quickly returned to active service if needed, making the 309th AMRG an essential component of the U.S. Air Force’s readiness and modernization strategies.