Staff Sgt. Brian Walker, 379th Expeditionary Maintenance Squadron aircraft structural maintenance journeyman, prepares an aircraft wheel to be painted, Oct. 5, 2009. The 379 EMXS fabrications flight performs maintenance on aircraft external sheet metal, internal framework, composites, fiberglass and plastic, as well as tubing and cable assemblies. (U.S. Air Force photo/Tech. Sgt. Jason W. Edwards)