How well prepared/capable are the medical services on board? My son has a chronic respiratory issue and while I doubt very highly he will have a flare up, I want to know if they have the capabilities of dealing with something like this. When it does occur we have to go to the ER, receive breathing treatments and steroids. This is not asthma but is similar. Any thoughts or experience with the medical staff? Is there an actual doctor on board or just a nurse?