If you come across an area that has a big fence and a sign that tells you to stay out or you will be shot, I suggest that you stay out. The big red letters saying “use of deadly force authorized” means exactly what it says.
Do people realize the optics and the backlash that would result should the government open fire on a large group of American citizens ... in any case and for any reason
Most of Area 51 is not a classic fence. It is a row of signs.