The frozen assets of other companies mean big business for Frozen Food Express Industries, one of the largest temperature-controlled trucking companies in the US. Through its subsidiaries, which include FFE Transportation Services and Lisa Motor Lines, the company transports truckload and less-than-truckload (LTL) shipments in the US, Canada, and Mexico. Hauling temperature-sensitive cargo accounts for most of the company's sales. Frozen Food Express Industries also hauls dry freight, under the American Eagle Lines brand, and offers logistics services. Overall, the company maintains a fleet of about 1,260 tractors and 2,350 trailers. FFE traces its roots to 1946.