How old is the youngest chief master sgt?

As of my last knowledge update in October 2023, the youngest chief master sergeant (CMSgt) in the U.S. Air Force was CMSgt Maurice D. McFadden, who was promoted to the rank at age 35 in 2009. However, it's important to note that age requirements and promotions can vary, and there may be younger individuals who have achieved this rank since then. For the most current information, please refer to official U.S. Air Force resources.