it focuses a lot on economic security and as general mattis and others have said, economic security is national security, so that s the big connection. steel is only used in a small percentage of the total output in military goods. that s certainly true, but we re down to only one producer of the armored plate that s used in military vehicles. if that company goes out of business or shuts that mill, we ll have no domestic producer of it. similarly in aluminum, we only have one producer domestically of the high purity aluminum needed for military aircraft and for satellites. the military demand is not enough to keep the steel industry or the aluminum industry going. they have to sell lots of commercial products and that s the interaction that mays it