No, sir; and unfortunately I came across that situation a number of times during our combat operations.
The air medevac system is an ISAF provision, under Regional Command South, and it's multinational. The Americans provide some support, but I've had air medevac support from the British, and from the Dutch as well, in our case.
It is very transparent to a soldier at the front. I've been in a number of situations where I've had to request air medevac for, unfortunately, mass casualty incidents. It's very transparent; I as commander or anybody else get on the radio and put across what's called a “line 9” medevac request, which is a programmatic request for air medical support. It details the types of casualties, the numbers, and the degrees of seriousness. From there, helicopters are pushed forward almost immediately to air-medevac the casualties out. In my case, most times it happened within 20 to 30 minutes of the request.