Logistics is the process of planning, implementing, and controlling the efficient flow of goods and services through the supply chain from producer to consumer. Distribution includes all freight carriers (air, sea, trucking, and intermodal) and warehousing. Until recently, most manufacturing firms took responsibility for the warehousing and coordination of their flow materials. Now these services are often outsourced to develop advanced just-in-time (JIT) delivery systems. The integration of international trade, logistics, and distribution into one continuous and extensive supply chain driven by global free trade has put this industry at the forefront of economic growth.