Retired Chief Master Sgt. Robert D. Gaylor, fifth chief master sergeant of the Air Force, speaks to Airman Leadership class 13-D at the Binnicker Professional Military Education Center, at Joint Base Pearl Harbor-Hickam Hawaii, Sept. 12, 2013. Gaylor has spread the message of maintaining a positive attitude and striving for technical aptitude at more than 30 Air Force bases every year since his retirement. U.S. Air Force photo/Tech. Sgt. Jerome S. Tayborn)