A dangerous mission to rescue 12 Thai schoolboys and their soccer coach trapped inside a flooded cave in Chiang Rai province for more than two weeks began on Sunday, and authorities said the first survivor may emerge around 11 hours later.<br />Thirteen foreign divers and five members of Thailand's elite navy SEAL unit are trying to bring the boys - some as young as 11 and weak swimmers – through narrow, submerged passageways that claimed the life of a former Thai navy diver on Friday.