171112-N-KR702-331 WESTERN PACIFIC (Nov. 12, 2017) U.S. and Republic of Korea naval ships are underway in formation. The USS Ronald Reagan (CVN 76), USS Theodore Roosevelt (CVN 71) and USS Nimitz (CVN 68) Carrier Strike Groups are underway and conducting operations in international waters as part of a three-carrier strike force exercise. The U.S. Pacific Fleet has patrolled the Indo-Pacific routinely for more than 70 years promoting regional security, stability and prosperity. (U.S. Navy photo by Mass Communication Specialist 2nd Class Holly L. Herline/Released)