There are in the process of “teaching” us Americans how to properly install and operate the tools. The Japanese companies don’t feel safe letting domestic work force install tools. They usually only use massive amounts of Japanese workers when a fab is just starting out(like global foundries). After the fab is up and running they will all go to other fabs throughout the world. So once global is finished with construction, all tools are installed, and producing micro chips it will run on domestic work force for the most part.