Senior Airman Joseph Spainhoward drives in screws as he constructs a cable protector at the Louis Armstrong International Airport in New Orleans, La., on Sept. 10, 2005. Spainhoward is a civil engineer assigned to the 78th Civil Engineering Squadron at Robbins Air Force Base, Ga., and is deployed with the 4th Air Expeditionary Group. Department of Defense units are mobilized as part of Joint Task Force Katrina to support the Federal Emergency Management Agency's disaster-relief efforts in the Gulf Coast areas devastated by Hurricane Katrina.