I love to see this.
PACIFIC OCEAN (Aug. 21, 2014) U.S. Navy and Japan Maritime Self-Defense Force Sailors plot sub-surface contacts in the combat direction center aboard the Arleigh Burke-class guided-missile destroyer USS Stethem (DDG 63) during a surface ship anti-submarine warfare readiness and effectiveness measure exercise. Stethem, assigned to Destroyer Squadron (DESRON) 15, is forward deployed to the U.S. 7th Fleet area of responsibility supporting security and stability in the Indo-Asia-Pacific region. (U.S. Navy photo by Chief Fire Controlman James Downs/Released)
It is exercises like this, closely held by US and its allies, jointly operating the newest technologies and rigorously and regularly exercising them that can make huge differences in the ability for these nation to conduct joint operations effectively.
The US does this with Australia, the UK, Japan, Korea, Italy, Spain, and others regularly.
But particularly Japan, who in the alliance with the US in the WESPAC, their role is focused on the longer range ASW screening of large US CSGs, SAGs, and ARGs that would be operating in the PTO.