Long ago probably about the same time I was getting a 4 year degree in Poly Sci/International Defense Systems. They don’t share it all with the Polaris techs brother. :-)
Russian subs have been skirting the U.S. coast for decades. Nothing new here.
Boomer FT's....damned sure would. They MUST know the entire realm of threats, it's their job to detect and defend against them.