U.S. Air Force Lt. Col. Mandy Giffin, 633d Surgical Operations Squadron operating room nurse, participates in a timed competition, testing her ability to assemble a Bookwalter retractor at Joint Base Langley-Eustis, Virginia, Sept. 20, 2023. The Bookwalter retractor allows surgeons to separate or hold back the ends of a surgical incision, mainly in the chest or the abdomen. (U.S. Air Force photo by Senior Airman Mikaela Smith)