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171112-N-JH929-129 PACIFIC OCEAN (Nov. 12, 2017) The guided-missile destroyer USS Chafee (DDG 90), right, leads USS Stethem (DDG 63), the guided-missile cruiser USS Princeton (CG 59) and USS Sampson (DDG 102) while transiting in formation. The ships are part of the USS Ronald Reagan (CVN 76), USS Theodore Roosevelt (CVN 71) and USS Nimitz (CVN 68) Carrier Strike Groups and 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 3rd Class Cole Schroeder/Released)