@CNN: The ongoing search for a missing Argentine navy submarine sheds light on the difficulty of finding a vessel that’s designed not to be found https://t.co/bDqbBhE9hQ https://t.co/nAx2UYfZXC

@CNN: The ongoing search for a missing Argentine navy submarine sheds light on the difficulty of finding a vessel that’s designed not to be found https://t.co/bDqbBhE9hQ https://t.co/nAx2UYfZXC