[ad_1] The system of undersea microphones fixed to the sea floor was originally built to track Soviet submarines. [ad_2] Source link
Tag: Military Submarines/Submersibles
U.S., South Korea to Step Up Nuclear Deterrence Efforts Against North Korea
[ad_1] Defense Secretary Lloyd Austin said the U.S. and South Korea would hold larger-scale and longer joint military exercises than their previous ones. [ad_2] Source link