Lockheed Martin awarded ATK a contract to provide the Thermal Control Subsystem for the Integrated Sensor is Structure (ISIS) program. Lockheed Martin leads an industry team in the development of an airship-based autonomous unmanned sensor with unique capabilities to track ground and air targets. The scope of work to be performed on the ISIS program includes designing, developing, building, and testing hardware that performs heat acquisition, heat transport, and heat rejection for two complete thermal systems. The baseline design for both systems is a pumped two-phase fluid loop that interfaces with large, lightweight radiator panels attached to the vehicle powerbay. Work on the contract will be performed at ATK's Beltsville, MD, facility.