Maj. Michael Mackovich, 455th Expeditionary Aeromedical Evacuation Squadron Critical Care Air Transport Team nurse, prepares to administer intravenous medication during flight out of Bagram Air Field, Afghanistan, March 21, 2013. The CCATT crew is constantly on their feet during the flight to observe and interact with the patients for any signs of medical need. (U.S. Air Force photo/Senior Airman Chris Willis)