Admiral John Richardson served as the Chief of Naval Operations for four years, which is the professional head of the US Navy. While in the Navy, Richardson served in the submarine force and commanded the attack submarine USS Honolulu in Pearl Harbor, Hawaii, for which he was awarded the Vice Admiral James Bond Stockdale Inspirational Leadership Award. He also served as the Director of Naval Reactors, responsible for the design, safety, certification, operating standards, material control, maintenance, disposal, and regulatory oversight of over 100 nuclear power plants operating on nuclear-powered warships deployed around the world.

Since his retirement in August 2019, he has joined the boards of several major corporations and other organizations, including Boeing, the world's largest aerospace company, and Exelon, a Fortune 100 company that operates the largest fleet of nuclear plants in America and delivers power to over 10 million customers.