I've been in a SCIF. Imagine walking into a large empty warehouse protected by armed guards, and in the middle of the warehouse is a building the size of a hou

I've been in a SCIF. Imagine walking into a large empty warehouse protected by armed guards, and in the middle of the warehouse is a building the size of a house raised off the ground. There are two pipes leading into the building, presumably electricity, networking, and water. The entrance is an airlock-setup with an outer and inner door - the type of doors you see on submarines in the movies. Inside, there is a mess of devices, screens, and folks that look like they do 14 hour shifts (if there were janitors, I didn't see any evidence that they'd ever been inside). There are machines that you can operate, and other machines that you are not allowed to be within several feet of. You're not allowed to leave with anything they don't allow you to leave with, and anything they do let you leave with is effectively destroyed (HDDs, etc).