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Airman 1st Class Karol Kowalczuk, 81st Surgical Operations Squadron, electrochemically etches a two-dimensional bar code on a surgical instrument March 26 in central sterile supply. With the bar codes instruments can be individually tracked and information is readily available, such as when they were last used or sterilized and in which surgical package they are located. (U.S. Air Force photo by Steve Pivnick)
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