The Boeing Co., Mesa, Ariz., was awarded a $53,020,686 firm-fixed-price contract.  The award will provide for the modification of an existing contract to support the AH-64D Apache. Work will be performed in Mesa, Ariz., with an estimated completion date of Feb. 28, 2014.  One bid was solicited, with one bid received.  The U.S. Army Contracting Command, Redstone Arsenal, Ala., is the contracting activity (W58RGZ-09-C-0161).