'Captured with a GoPro Hero 5' 

Tags: training , Escape , Water , kit , fail , dark , soldier , crash , pilot , helicopter , waves , military , underwater , Navy , Royal , marine , Sink , Dunker , swim test , culdrose , yeovilton , rnas

SEE ALSO: six , sel , burlesque fitness , lock , hudson tractor , rosebud , homeworkout , inter , Live , Kareena Kapoor Khan �