Zach Donnelly, son of the late Dave Donnelly, holds photos of his father and his family at Ellsworth Air Force Base, S.D., Nov. 4, 2016. Donnelly’s father passed away on Oct. 15 after a long battle with cancer. Prior to becoming a police officer with the Department of the Air Force, Dave served 10 years in the U.S. Army. (U.S. Air Force photo illustration by Airman 1st Class Denise M. Jenson)