Power Play, a thrilling new Trident Deception short story by Rick Campbell.
The Russians have their newest class of nuclear attack submarine and is taking it, K-561 Kazan, on a shakedown cruise. Unbeknownst to them, however, this new submarine is being followed by an American submarine, the USS Pittsburgh. The Pittsburgh is to gather any intelligence they can on this new Russian submarine while avoiding detection by the Russians. But what first appears to be the rollout of a new type of submarine, might well be something completely different. Instead the Pittsburgh witness a torpedo firing exercise—and the radical new technology might well not be the submarine, but the torpedo.