Apologies if this has been answered in the past. I was going to put this in today's JFK evacuation thread, but it is more of a general question related to all security breaches. Mods, please move if you feel necessary.

When TSA decides to dump the terminal, do they make airport employees get rescreened too? I'm talking McDonald's staff, janitors, maintenance personnel, gate agents, etc. If not, seems like AQ might decide to infiltrate airport restaurants next. Just take your contraband through the exit, put on your Cinnabon shirt and grab a cup of coffee. If TSA asks while dumping the terminal, just say you are on break.

I know there is already a layer in place to stop Mr. Bad Guy from hiding his weapon in the closest potted plant. Hopefully they have a layer for this too.