Sad news is coming out of Thailand, one of the rescuers was on his way to take oxygen to the boys and passed away because he himself ran out of oxygen. The oxygen levels have lowered down to 15% inside of the cave, this is very dangerous for anyone the needs oxygen to live, this can cause the same sickness as altitude sickness. "We originally thought the young boys could stay safe inside the cave for quite a long time but circumstances have changed. We have limited amount of time." He did not say how long they could survive with current oxygen levels, but he said getting more oxygen piped into the boys was top priority.