Depends on the location and timing. For a lot of the northeast part of the path, the eclipse is going to happen right after school lets out. Most of the students would still be on their way home

This doesn’t seem like an unreasonable requirement for work attire. In a customer-facing role, they are representing the company and so the company is very concerned about it’s image.

For non-customer facing roles, it’s more about keeping the office productive and with minimal conflict. Someone walking in with a “Grab them by the pussy” shirt with a big picture of Trump’s face is going to stir up some shit that the company would rather avoid.

The national guard is part of the military, so funded and supported by the feds. Unlike normal army units though, each state or territory has its own national guard unit under the command of the governor. The intention is to give each state the power to quickly respond to emergency situations without needing federal approval. They’re the successors to the old state militias, but have much stronger federal ties now.