Chief Master Sgt. Jacinda Rivers, Air Force Special Operations Command command and control functional manager, right, raises her hand during her promotion ceremony to chief master sergeant during a ceremony at Hurlburt Field, Fla., July 27, 2012. The rank of chief master sergeant is limited by federal law to only one percent of the Air Force enlisted force. (U.S. Air Force photo / Airman 1st Class Christopher Callaway)

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