On 28 June 2010, "Ohio" was one of three "Ohio"-class submarines involved in a US response to Chinese missile testing in the contested East China Sea. "Ohio", , and all surfaced simultaneously in the waters of the Philippines, South Korea, and the British Indian Ocean Territory respectively. In November 2011, Lt. Britta Christianson became the first female officer, and first female overall, to qualify for service on a US Navy submarine, being assigned to "Ohio"s Gold Crew. The first female enlisted sailor qualified in August 2016, assigned to sister boat, "Michigan".