Workers build M-3 tanks in the Detroit Arsenal, a plant specifically commissioned (and built, from the ground up, in six months) to manufacture armored vehicles. During his "Arsenal of Democracy" radio address of 1940, President Roosevelt sought to assure his listeners that England and America's other future allies were not asking the United States "to do their fighting. They ask us for the implements of war, the planes, the tanks, the guns, the freighters which will enable them to fight for their liberty and for our security."