Col. (Dr.) Guillermo Tellez, 99th Medical Group commander, swings a sledge hammer during a wall breaking ceremony to start a renovation project worth $72 million at the Mike O' Callaghan Federal Medical Center Aug. 28, 2013, at Nellis Air Force Base, Nev. Women's health, labor and delivery, intensive care unit and the chapel will be the first areas to see design improvements. Additionally, a state of the art hybrid operating room suite is being added along with an enhanced medical surgical unit, sleep lab and pharmacy. (U.S. Air Force photo by Airman 1st Class Christopher Tam)
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