Final answer:
Chief Master Sergeant Rodney J. McKinley served as PACAF Command Chief Master Sergeant before becoming the CMSAF in June 2006 and implemented significant changes in the USAF.
Step-by-step explanation:
Chief Master Sergeant Rodney J. McKinley, who previously served as the Pacific Air Forces (PACAF) Command Chief Master Sergeant, assumed the role of Chief Master Sergeant of the Air Force (CMSAF) in June 2006. McKinley's tenure as CMSAF was marked by advocacy for significant reforms within the United States Air Force (USAF).
He spearheaded initiatives such as the overhaul of feedback and performance report forms, encouraged Airmen to pursue their Community College of the Air Force (CCAF) degrees earlier, and reinstated traditional aspects of Air Force enlisted culture, including collar brass and the Good Conduct Medal. McKinley's leadership focused on enhancing enlisted education and restoring elements of the Air Force's rich heritage. Notably, he created the Enlisted Heroes Walk, a tribute honoring the sacrifices and contributions of enlisted Airmen throughout the history of the United States Air Force.