3 Airmen promoted to Chief Published Nov. 14, 2013 Team Eglin Public Affairs EGLIN AIR FORCE BASE, Fla. -- Congratulations to the three senior master sergeants on their selection for promotion to chief. Jason Byars, 96th Maintenance Group Ginger McCracken, 96th Surgical Operations Squadron Thomas O'Malley, 53rd Computer Systems Squadron Air Force officials selected 400 of 2,023 eligible senior master sergeants for promotion to chief master sergeant for a selection rate of 19.77 percent.