Forty members of the 79th Medical Wing were promoted to Staff Sergeant on Aug. 20. Air Force selected 13,269 for promotion to staff sergeant out of 39,260 considered during the 2015 E5 cycle, for a 33.8 percent selection rate. This is the first staff sergeant promotion cycle to incorporate the Weighted Airman Promotion System changes, such as minimum promotion fitness examination and skills knowledge test scores, as well as lower time-in-service and time-in-grade.