The fighters behind the fighters

A friend sent me this powerful (non-exclusive) image from Michael Yon:

Yon describes it as follows:

A crew from the United States Air Force spent Saturday night and Sunday morning airlifting different groups of wounded soldiers from Kandahar to Camp Bastion to Bagram, back to Kandahar, then back to Bagram, and back to Kandahar. These patients were from Afghanistan, Australia, Canada, and the United States. Here, an Air Force nurse caresses the head of a wounded, unconscious Canadian soldier while whispering into his ear.