ezdays kitbash 09 summer challenge

[ezdays]

I have taken this a step further and added a couple of cars, so here's a few more views of my project in no particular order:                    

Now, after I took the above pictures, I realized that there was something missing. I couldn't believe that the construction crew forgot to build something very pertinent to the operation of this facility, so I have yet another few pictures to show where they did go back and do their thing. It may not be apparent at first, but you'll see what I'm talking about.

Care to veture a guess as to what it is that is missing from this structure? It is external and not something like the bathrooms.