 PHOENIX--BUSINESS WIRE--AAA Cooper Transportation, a subsidiary of Knight-Swift Transportation Holdings NYSE: KNX, announced it would expand its LTL capacity with the opening of a St. Louis, MO service center this fall. This expansion will connect AAA Coopers existing 15-state network with the largest metropolitan area in Missouri. The company has long operated in the Chicago market, and the new St. Louis facility will extend the companys reach to an estimated 80 of the Illinois market. 