The U.S. Navy awarded ATK a $48-million production contract for the manufacture of the AAR-47 Missile Warning System. The award encompasses production of new assemblies, including optical sensor converters and computer processors, as well as options for retrofitting weapon replaceable assembly upgrades and delivery of ATK's Countermeasures Signal Simulator (CSS) to test the systems operability. The AAR-47 missile warning system, believed to be the only system in use today that integrates missile, laser, and hostile fire threat warning into a single system, is installed on fixed and rotary-wing aircraft flown by the U.S. and its allies in more than 16 countries. The systems are installed on aircraft such as the A-10, C-5, C-17, C-130, MC-12W, P-3, CH-53, CH-46, HH/SH-60, AH-1W/Z, UH-1N/Y, and MV-22.