Fig. 5A–B.

(A) US Army soldiers transport a trauma victim to a US Army medical helicopter in Tarmiyah, Iraq, September 30, 2007. (US Navy photograph by Mass Communication Specialist 2nd Class Summer M. Anderson. Courtesy of the US Department of Defense, Washington, DC.) (B) More seriously wounded patients are loaded onto a C-17 “flying ICU” in March 2007 for transport out of Iraq to Level IV facilities. (Photograph by Tech Sgt Mike R. Smith. Courtesy of the National Guard Bureau, Arlington, VA.)