U.S. soldiers assigned to Alpha Company, 3rd Battalion, 7th Infantry Regiment, 4th Advise and Assist Brigade, 3rd Infantry Division and U.S. soldiers assigned to Charlie Company, 3rd Battalion, 126th Aviation Regiment, Massachusetts National Guard carry a simulated casualty to medical evacuation helicopter in Al Asad Airbase, Iraq, March 11, 2011. U.S.soldiers assigned to 4-3 AAB with the assistance U.S. soldiers assigned to C Co 3-126 AVN conducted evacuating a casualty training.