AAR Airlift Group Inc., Palm Bay, Fla., is being awarded a $143,668,332 option year modification for rotary wing aircraft, personnel, equipment, tools, material, maintenance and supervision necessary to perform passenger and cargo air transportation services.  Work will be performed in Afghanistan, and the option will start Dec. 1, 2012, to be completed by Nov. 30, 2013.  Contract funds will expire at the end of the current fiscal year.  This contract was a competitive acquisition.  The contracting activity in U.S. Transportation Command Directorate of Acquisition, Scott Air Force Base, Ill. (HTC711-09-D-0021).