Well, I don't know what to tell you about the desert idea. I'm not a desert fan so sand-is-sand to me. But if you go with the desert landing field, wasn't it accompanied by a couple of fighters on either side? Could add those. I'm sure you have LOADS of spare time to build two more planes!
But I most remember the Enterprise on a tarmac, surrounded by people viewing it. The cast of Star Trek and photographers.
so in front of any nasa-style generic building would do.