Air Commandos selected for top enlisted rank Published Nov. 19, 2010 KADENA AIR BASE, Japan -- Air Force officials recently selected two senior master sergeants previously assigned to the 353rd Special Operations Group for promotion to chief master sergeant Nov. 18. The selectees are Daniel Gamble, formerly assigned to the 353rd Special Operations Maintenance Squadron, and Stephen Hadden, formally assigned 353rd Special Operations Support Squadron. Sergeants Gamble and Hadden were both recently reassigned to the 18th Maintenance Group and Air Force Special Operations Command Headquarters respectively. Air Force officials selected 504 of 2,287 eligible senior master sergeants for promotion to chief master sergeant, for a selection rate of 22.04 percent. The average score for those selected was 661.37, with an average time in grade of 3.33 years and time in service of 23.30 years, respectively. The average score was based on the following point averages: 135 for enlisted performance reports, 24.49 for decorations, 70.24 for the Air Force supervisory exam and 381.46 board score. Those selected for chief master sergeant will be promoted according to their promotion sequence number beginning January 2011.