"...[O]ne was not allowed to have firearms, cameras, recorders, knives, illegal drugs, alcohol, personal computers, electronic notebooks, or cell phones on the property. This applied to parking lots too. Cars, bicycles, people, backpacks, dogs, etc. were subject to search. Similarly for those passing through..."
How could one just "pass through" a secured environment like that? Sounds like a military base to me.
~ Blue Jays ~
Look at the maps. Some public highways run through "restricted" property. (Not a military base though.) Still, one isn't forced to take a job under these conditions.
Note that phone company personel, furniture delivery people, etc., also must follow the same rules.