Subs are a big deal, when it comes to deterrence (M.A.D.). If a nation is wiped out by a first strike, the subs can pop up, six months later, and take out the attacker.
If a nation knows too much about the subs of the other nation, then it's quite possible that they may consider a first strike.
It's a horrible thought, but people can be really barking mad.
The Virginia-class sub is a fast attack sub; not a boomer, but the tech used between them is very similar.
I'm actually surprised that people don't know why subs are such a big deal, but I guess shouldn't be. The Cold War was really bad (my father was in the CIA). People, these days, may not know what it was like. I grew up in the Cold War. the current couple of generations have had the luxury of not growing up in that, but we may be bringing the band back together for a reunion tour.