Nov. 27, 2018 Air Force selects 479 in chief master sergeant 18E9 promotion cycle Air Force officials have selected 479 senior master sergeants for promotion to chief master sergeant out of 2,241 eligible for a selection rate of 21.37 percent.
Dec. 7, 2017 AF releases chief master sergeant 17E9 promotion cycle statistics The Air Force has selected 472 senior master sergeants for promotion to chief master sergeant out of 2,142 eligible for a selection rate of 22.04 percent in the 17E9 promotion cycle.