“Tens of thousands of sailors and Marines will participate in the biggest U.S. naval exercise in a generation to test how the services will fight across vast distances as they prepare for possible conflict with China or Russia. Aircraft carriers, submarines, planes, unmanned vessels, and about 25,000 personnel will participate in Large Scale Exercise 2021, which will begin in late summer. The massive exercise will span 17 time zones with sailors and Marines in the US, Africa, Europe and the Pacific joining. Live forces will participate in both the Atlantic and Pacific oceans ... will include personnel from all three Marine expeditionary forces and sailors from the Navy's Second, Third, Sixth, Seventh and Tenth fleets ... LSE 2021 will use technologies similar to what you see in virtual video gaming environments to expand the number of participants by linking commands and units around the globe virtually, thereby increasing the number of players, real and synthetic, to better replicate the realistic scale of scenarios the Navy and Marine Corps team is likely to face in the future ...
The sailors and Marines participating will test several concepts they're likely to encounter in a possible conflict with China”
https://www.military.com/daily-news...5000-personnel-across-17-time-zones.html

“US Navy's largest war games in 40 years ... Fleets began the Large Scale Exercise on Tuesday”
https://www.the-sun.com/news/3410018/biggest-us-navy-drills-40-years-world-war-three/