Col. Kevin Merrill, 919th Special Operations Wing commander, waves to a crowd, Dec. 19, 2019, Duke Field, Fla. Merill was introduced at the naming ceremony for the MH-139 aircraft. The MH-139 is the replacement for the UH-1N helicopter for the U.S. Air Force. (U.S. Air Force photo by Senior Airman Dylan M. Gentile)