Sikorsky Aircraft Corp., Stratford, Conn., is being awarded a $435,315,279 modification to a previously awarded cost-plus-incentive-fee contract to procure four CH-53K System Demonstration Test Article aircraft. Two percent of the work will be done in Fort Walton Beach, Fla., and two percent in Jackson, Miss. Seventeen percent of the work will be done in West Palm Beach, Fla. Other work sites are in Connecticut, Kansas, Utah, Missouri, West Virginia, Washington, Ohio, Wisconsin, California, Arizona, Iowa, Pennsylvania, United Kingdom and Canada. Work is expected to be completed in June 2017. The Naval Air Systems Command, Patuxent River, Md., is the contracting activity. (Source: DoD, 05/30/13)