The additive manufacturing lab at Robins Air Force Base is using 3D printing to improve US Air Force readiness and aircraft availability. Part of the 402nd Commodities Maintenance Group's READI team, the lab produces parts for aircraft including the C-130, C-5, C-17, B-1, B-52, KC-135, and F-15 through additive manufacturing and reverse engineering. The lab commissioned polymer printing equipment about 10 years ago and introduced metal additive equipment about two years ago to expand its mission scope. The four-person team focuses on solving parts problems for legacy aircraft whose original suppliers have discontinued production or are unwilling to supply small batches, using polymer parts to replace metal components and fill supply chain gaps. This capability avoids complex machining processes, saves time and cost, and accelerates parts delivery, directly improving maintenance efficiency and fleet availability. It has practical significance for sustaining the readiness of aging fleets.