He graduated from the University of Mississippi School of Medicine in 1986 and did his residency at Cook County Hospital in Chicago, IL, graduating in 1990. He and his wife Cindy have two daughters, Jessie and Kerry. Soon after becoming a Christian in 2001, he became interested in missions and began participating in missions trips on a yearly basis. After going to Belize to do primary care, John realized that he would be more effective if he could use his specialty - radiology - on the mission field. Affordable portable ultrasound machines were a new technological development at that time, so John and his partners bought one and started a ministry called Units USA, which sends radiologists around the world to do what they do best in order to assist short-term medical teams. His work with this ministry took him to Ethiopia in early 2006...