The exercise involving five ships, which ended Monday, came amid heightened tension in the region over North Korea's ballistic missile and nuclear tests and as US President Donald Trump began a 12-day tour of Asia beginning in Japan on Sunday.
"The exercise helped improve fighting skills and deepened cooperation with India," Japan's Maritime Self Defence Force said in a press release.
The Reagan will join two other carriers in the Western Pacific, the USS Nimitz and USS Theodore Roosevelt, in a potent reminder to Pyongyang of the US ability to rapidly mobilize military force, US officials told Reuters earlier.
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