Raytheon Co., Integrated Defense Systems, Portsmouth, R.I. is being awarded an $80,830,000 modification to a previously awarded firm-fixed-price contract (N00019-11-C-0077) to provide for the procurement of 25 MH-60R AN/AQS-22 Airborne Low Frequency Sonar (ALFS) systems for the Royal Australian Navy under the Foreign Military Sales Program.  Work will be performed in Neuilly-sur-Seine Cedex, France (68 percent), and Portsmouth, R.I. (32 percent), and is expected to be completed in October 2016.  Contract funds will not expire at the end of the current fiscal year.  The Naval Air Systems Command, Patuxent River, Md., is the contracting activity.