Sources Sought DEPT OF DEFENSE DEPT OF THE ARMY is seeking maintenance support for Fire Trucks at Yuma Proving Ground, Arizona. The service is intended to provide a wide range of mechanical and electrical repair and maintenance services for automotive vehicles, such as passenger cars, trucks, and vans, and all trailers or engine repair and replacement. Small businesses are encouraged to identify their capabilities in meeting the requirement at a fair market price. The associated NAICS code is 811111 - General Automotive Repair.