I mean, the essence of the Cold War was each side trying to find any advantage they could, while pretending everything they tried worked. Maybe the dolphins do

I mean, the essence of the Cold War was each side trying to find any advantage they could, while pretending everything they tried worked. Maybe the dolphins don't work well, maybe the enemy knows it, maybe they don't. Maybe the risk it works dissuades them from trying. Maybe the anti-dolphin countermeasures they carry are cumbersome and lead to their discovery. Maybe the dolphins work for once; I'm sure not every trial failed. When you're throwing unlimited piles of other people's money at a problem, why not try some long shots?