Question

O que aconteceu foi, durante a Guerra Fria, a Marinha americana tinha um sistema que era secreto naquele tempo, e que eles usavam para rastrear submarinos russos.

Accepted Answer

What happened was, during the Cold War, the U.S. Navy had a system that was secret at the time, that they used to track Russian submarines.

Front	O que aconteceu foi, durante a Guerra Fria, a Marinha americana tinha um sistema que era secreto naquele tempo, e que eles usavam para rastrear submarinos russos.
Back	What happened was, during the Cold War, the U.S. Navy had a system that was secret at the time, that they used to track Russian submarines.

O Aconteceu Foi Durante Guerra Fria Marinha Americana