Talk:AIF/@comment-10905876-20150107005102/@comment-10905876-20150107145833

IRF officer: "Sir, they're following us in at flank speed."

IRF captain: "Accelerate to flank speed, and launch a torpedo playing our acoustic signature. Navigator, take us down a side canyon ahead, and prepare for quiet running."

The sub launches the torpedo, and the passive sonar aboard the Pittshaven shows two submarines in the canyon. The real one slows down and turns into a side canyon and goes quiet, the decoy continues on at 91 knots down the canyon.