Staff Sgt. Karl Ferree raises a lead rope over the skeleton of a big top shelter May 7 at Balad Air Base, Iraq. The shelter was moved from its previous location to deconflict with flightline operations. Sergeant Ferree is a 332nd Expeditionary Civil Engineer Squadron structural engineer deployed from Luke Air Force Base, Ariz. (U.S. Air Force photo/Senior Airman Julianne Showalter)