first sign of methane intoxication is ear tau built. -- irritability. >> i'm sure we saw a little of that.m sure there was some of that downth below.w. >> for sure. >> this was a fleeting moment for them. a glance. traps the adrenalin of the situation is overriding thehe ear tau bill tee that may be tto inhaisht with methane with exposure. >> and carbon dioxide that can w cause brain damage andther misjudgment.nty there is plenty of that downow t there. as you rise to the surface you y get more and more carbon dioxide. the issue is getting them enough oxygen and making sureoxd their levels are normal whenir they get to the hospital they are going to, number one on the list.mb when --il >> when will we see the symptoms if they experienceuld e them? >> as soon as the initial adrenalin surge is off. >> like tomorrow then? -- >> within the next day. when they get to the hospital, , we are going to see if they ha have impaired judgment, if