Raytheon won a $15.4 million U.S. Navy contract for the AN/AQS-22 Airborne Low Frequency Sonar system, the primary undersea anti-submarine warfare sensor for the U.S. Navy's MH-60R multi-mission helicopter. The AN/AQS-22 provides anti-submarine warfare mission support capabilities, including submarine detection, tracking, localization, classification, acoustic intercept, underwater communication and environmental data collection. Full rate production of AN/AQS-22 has been accelerated since the initial fielding of the MH-60R helicopter into the U.S. Navy fleet in 2006. Under this latest contract, Raytheon will provide three additional AN/AQS-22 systems; development efforts for a technology refresh of the sonar transmitter-receiver control module; automated test equipment for analog and digital modules; and increased acoustic test capabilities. Work on the contract will be performed at Raytheon's Maritime Mission Center, Portsmouth, R.I.