S. was very wary of the Soviets gaining an advantage and sent the USS Scorpion to have a look. Among the Soviet ships that the Scorpion was sent to spy on were three undetected Echo-II class submarines lying in wait beneath the surface.
             Around 6:00 pm on May 22, 1968, the Russians detected the Scorpion and engaged it with three Echo-II class nuclear powered submarines. "The
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