A close-up photo of Battle Field Acupuncture on the ear of Senior Airman Katrina Santiago, 55th Medical Operations Squadron aerospace medicine technician. Santiago received acupuncture inside the Ehrling Bergquist Clinic at Offutt Air Force Base, Neb. Oct. 11, 2018 to help alleviate back pain. (U.S. Air Force Photo by Delanie Stafford)