Sometimes it's good to let your enemy know where you are...Such as 2010 when the ChiComs were testing their missiles in the East China Sea...Suddenly three USN Ohio class SSGN's suddenly surfaced in locations which surrounded the Chinese mainland to remind the Chinese that just those three vessels alone were carrying 462 nuclear armed cruise missiles, and were capable of popping up out of anyone's ocean anywhere on the planet at any time...
“It is another sign that the U.S. is determined to not just maintain its military dominance in Asia, but to be seen doing so — that is a message for Beijing and for everybody else, whether you are a U.S. ally or a nation sitting on the fence.”
...Ben