Wings of Mercy

To the Rescue: Members of Charlie Company of the 1-214th, known as "Dustoff", come to the aid of a Marine severely wounded by an IED in Marjah, Afghanistan. Photo: James Nachtwey for TIME.

Photo essay of MEDEVAC crews in action by renowned photographer Jim Nachtwey. We can never repay the sacrifices made for all of us, and are so grateful for and proud of our medics who risk their lives so that others may live. Please be advised that images of MEDEVAC missions can - by their very nature - be distressing.