170721-N-NH199-021 SAN DIEGO (July 21, 2017) Sailors assigned to Naval Medical Center San Diego flip a tire after correctly answering a question about the Battle of Midway at the CPO 365 Olympics. The CPO 365 Olympics consisted of events and training for the first class petty officers before they are frocked to chief petty officer. (U.S. Navy photo by Mass Communication Specialist Harley K. Sarmiento/Released)