Retired Col. Carlyle “Smitty” Harris, and his wife, speak with Air Command and Staff College students, May 29, 2019, during the 38th annual Gathering of Eagles at Maxwell Air Force Base, Alabama. Harris was selected as an Eagle for his acts of leadership and courage during his time as a POW in Vietnam, where he introduced the tap code as a means for prisoners to communicate. (U.S. Air Force photo by William Birchfield)