U.S. Air Force Lt. Col. John Marks, 303rd Fighter Squadron pilot, and his son Alex wait in a tunnel before they throw the opening pitch at Kauffman Stadium in Kansas City, Mo., Sept. 19, 2016. Marks previously threw in the first pitch April 8, 1991, at the Royals’ home opener against the Cleveland Indians. The Royals finished 4-2 against the Indians that day. (U.S. Air Force photo/Senior Airman Missy Sterling)