Col. Charles Velino, 15th Operations Group outgoing commander, thanks the men and women in his command for their hard work and dedication during the 15th Operations Group Change of Command Ceremony, Joint Base Pearl Harbor-Hickam, Hawaii, June 22, 2017. The 15th Operations Group oversees operations at the largest joint-use airflield in the U.S., executes global combat and peace time operations, and provides executive airlift for senior military leaders. (U.S. photo by Tech. Sgt. Heather Redman)