Never seen before footage of the Thai cave rescue was released on Wednesday.<br />Footage shot by the Thai Navy SEALS offers the first peek into the daring rescue operation that lasted nearly three days.<br />The boys endured dives in zero visibility lasting up to half an hour. They were put into harnesses and high-lined across rocky caverns.<br />The boys were trapped in a northern Thailand cave for nearly a fortnight until a team of experienced divers rescued them in an operation that lasted three days.<br />
