USS Carl Vinson, HMS Queen Elizabeth, and JS Kaga lead US, Australian, Japanese, and British ships and aircraft during an exercise in the Bay of Bengal on October 17. US Navy/MCS2 Haydn N. Smith Insider: US, UK, and Japanese aircraft carriers are training together in the Pacific. Here's how their 'big decks' stack up * In recent weeks, US Navy ships have worked with other navies during exercises in the Pacific. * The exercises have seen US aircraft carriers sail with their British and Japanese counterparts. * Their drills are part of an effort to develop interoperability — and a demonstration to China. It's been a busy two months for the American, British, and Japanese navies — especially their carriers. In early October, they were part of a massive exercise that saw the US Navy's USS Ronald Reagan and USS Carl Vinson, the UK's HMS Queen Elizabeth, and Japan's JS Ise operating together in the Western Pacific. A few weeks later, USS Carl Vin