 Born in Japan, he is also the first 4-star admiral to have participated in the Navy Junior Reserve Officers' Training Corps (NJROTC) and the first officer from the U.S. Navy's P-3 Orion maritime patrol aviation community to achieve 4-star rank.While a vice admiral, he served as the Assistant to the Chairman of the Joint Chiefs of Staff.Harris was Commander, U.S. Pacific Fleet in Hawaii from 2013–2015.