Staff Sgt. James N. Wheeler (left) and Lance Cpl. Matthias E. Knudsen (right) received the Purple Heart May 1 at Camp Taqaddum, Iraq, for injuries they received during an improvised explosive device attack March 3. The Marines are military police officers with Marine Wing Support Squadron 374, Marine Wing Support Group 37 (Reinforced), 3rd Marine Aircraft Wing. Wheeler is a native of Vernal, Utah, and Knudsen hails from McKinley Ville, Calif.Photo by: Sgt. Enrique S. Diaz