The United States is the world’s largest military power, but it has no independent defense industry, no pure military factory. Their military production is in civil industries. For example, Ford Motor Company, in addition to manufacturing cars, they also manufacture tanks, aircraft, artillery on the fleet and even spacecraft. Dallas cowboys crocs crocband clog. America also has the wonderful thing about defense science research organized by the government, military factories and schools. The research achievements are not only limited to military use but also need to be promptly disseminated in society.