Col. Joseph A. Giovannini, M.D. uses Rotary Epithelial Scrubber to remove an accurate amount of epithelium cells without trauma to 811th Security Forces Squadron response force member, Airman 1st Class J.D. Whelihan’s eye at Joint Base Andrews, Md. The laser can now reshape the eye as needed for the patient's prescription.(U.S. Air Force photo by Staff Sgt. Perry Aston)