david mckenzie there, thank you so much for kbrour repoyour rep. we'll get back to you in just a moment. >> you saw the ambulance. we can tell you medical teams are waiting outside the cave. they are ready to take action as soon as the first boys emerge. they are the first step in what is a massive medical operation. after 15 days underground, look, these boys are weak. and a team of doctors, nurses and paramedics are going to assess each one before they're even flown to the hospital. they have to make sure they have the strength, sort of see and assess what's going on with them. outside the hospital a dozen dads are waiting for each of the boys and their coach. joining us now by the phone is dr. daria long gillespie. daria, can you explain to us what kind of medical concerns you would have for these boys after being in this cave for 15 days in those conditions? >> yes, absolutely, and i know we are all waiting with baited breath to hear what happens with these boys. one of the main concerns is oxygen right now. they've been in an area where oxygen