When the Peruvian submarine Pacocha crashed and plunged 42 metres down to the seabed with 22 sailors inside, it was First Lieutenant Roger Cotrina Alvarado's job to save his crew. Show more
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When the Peruvian submarine Pacocha crashed and plunged 42 metres down to the seabed with 22 sailors inside, it was First Lieutenant Roger Cotrina Alvarado's job to save his crew. Show more
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