Retired Chief Master Sgt. Joe Markin talks to Airmen during a Professional Enhancement Course on Oct. 23, 2009, at Scott Air Force Base, Ill. Airmen from different Air Force specialties came together to attend the quarterly Airmen Enhancement Program designed to revisit instruction they received early in their careers, and receive mentorship and insight from senior leaders. (U.S. Air Force Photo/Senior Airman Brian Ellis)