Raytheon Co., Tucson, Ariz., is being awarded a not-to-exceed $220,509,647 modification to previously awarded contract (N00024-07-C-5444) for MK15 Phalanx Close-In-Weapon System Block 1B upgrades and conversions, system overhauls, and associated hardware. The Phalanx Close-In Weapon System (CIWS) is an automatic terminal defense weapon system designed to detect, track, engage, and destroy anti-ship missile threats penetrating other defense envelopes. The Phalanx Block 1B CIWS weapon systems are also being installed on low-boy trailers with self contained diesel electric power and cooling water. This configuration of the Phalanx CIWS is the MK 15 MOD 29 land-based Phalanx weapon system and has been deployed to Iraq. Work will be performed in Louisville, Ky., (30 percent); Andover, Mass., (19 percent); Tucson, Ariz., (16 percent); Syracuse, N.Y., (7 percent); Long Beach, Calif., (6 percent); Radford, Va., (6 percent); Burlington, Vt., (6 percent); Palm Bay, Fla., (2 percent); Pittsburg, Pa., (2 percent); Bloomington, Minn.; (2 percent), Salt Lake City, Utah, (2 percent); Norcross, Ga., (1 percent); and New Albany, Ind., (1 percent), and is expected to be completed by Sept. 2012. Contract funds in the amount of $19,904,529 will expire at the end of the current fiscal year. The Naval Sea Systems Command, Washington Navy Yard, D.C., is the contracting activity.