The Russians made all kinds of underwater weapons, there are other governments that have done it as well, but not nearly as many as the Russians have. The only reason i know this is from wandering through pages and pages of weapons for another thread. Still, balancing a whole new list of weapons for a single map seems a bit far-fetched.
Didn't you hear about the top secret program that got messed up when Katrina hit. I am talking about the one where we had dolphins with spearguns on their backs to fight terrorism.