NASA/Armstrong Flight Research Center requires engineering, manufacturing, and technical support services for the Global Hawk Skyrange Program, covering operation, maintenance, and modifications to air vehicles, Ground Control Stations, Ground Support Equipment, and spares. The agency intends to award a sole source contract to Northrop Grumman Systems Corporation under FAR 6.103-1, asserting that only one responsible source can satisfy the requirement. Interested organizations may submit their capabilities for consideration, though the government retains sole discretion on whether to compete the acquisition. Performance will be at NASA/Armstrong Flight Research Center.