helicopter and ambulance to hospital. after days of preparation expert foreign divers and members of the time navy's elite seal unit launched a daring and dangerous mission to rescue the youngsters and their coach the hazardous nature of the operation highlighted by the death of a diver on friday. the boys and their rescuers must travel four kilometers from the elevated shelf where they were found to the entrance to the cave each boy will be tethered to two divers who will supply them with air fixed ropes and lights have been installed to guide the group through the darkness and tanks strategically placed along the route for resupply the t. junction or sam yak is the most critical part and narrow for quick there's only room for one person at a time here they will have to remove their tanks and dive through to the dry area as night fell the rescue mission halted to give the teams time to get ready for the