https://www.jbsa.mil/News/News/Article/3599416/air-force-selects-506-senior-master-sergeants-for-promotion-in-23e9-promotion-c/
Air Force selects 506 senior master sergeants for promotion in 23E9 Promotion cycle to chief master...
Air Force officials selected 506 Air Force senior master sergeants for promotion to chief master sergeant out of 2,249 eligible for a selection rate of 22.5...