Watch Helices: Revelando una tragedia (2013) Official Trailer

On a Sunday of 1971 in Montevideo, a crowd waited anxiously to see a military show involving helicopter maneuvers. In a matter of seconds, the quiet weekend scene turned into a nightmare: two helicopters collided with each other, causing the death of several spectators. This is the first time that a Uruguayan documentary addresses these events, hidden for 40 years.