The top 1 percent
Whiteman Air Force Base’s newest chief master sergeants have been selected! In the center from left to right: Senior Master Sgts. Christopher Yevchak, Mark Umfleet and Jack Quinn pose with current chiefs Nov. 13, 2013, at Whiteman Air Force Base, Mo. Only 1 percent of the enlisted tier ever achieves this prestigious rank. (U.S. Air Force photo by Staff Sgt. Brigitte N. Brantley/Released)