Us Navy / Mc2 Sean M. Castellano / Restricted To Editorial Use - Mandatory Credit Afp Photo /us Navy/mc2 Sean M.castellano - No Marketing - No Advertising Campaigns - Distributed As A Service To Clients Mc2 Sean M. Castellano, AFP/Getty Images

This US Navy handout photo obtained March 15, 2017 shows the aircraft carrier USS Carl Vinson (CVN 70), foreground,as it transits the East China Sea with the Japan Maritime Self-Defense Force Murasame-class destroyer JS Samidare (DD 106) on March 9, 2017. The Carl Vinson Carrier Strike Group is on a western Pacific deployment as part of the US Pacific Fleet-led initiative to extend the command and control functions of US 3rd Fleet.A nuclear-powered US aircraft carrier arrived in South Korea on March 15, 2017 for joint military exercises, the US Navy said, in the latest show of force against the North. The USS Carl Vinson berthed in the southern port of Busan as US Secretary of State Rex Tillerson began a tour of the region, where tensions have spiked in recent weeks with missile launches from the nuclear-armed North and the brazen assassination of Kim Jong-Un's half-brother in Malaysia.