Supply Ship Door

I was looking at a Supply Ship interior and one question struck me: how were aliens able to haul all this stuff inside? There's only one lift leading to the cargo bay on 1st floor, and it's so tiny...

So I decided to fix it. I added a big, 3-tile cargo door at the back of the ship, at level 1, as well as the necessary AI routes for flying units. It's inaccessible from the ground level, which means that aliens can gratuitously pelt you with sniper fire, but on the other hand you can use it for boarding if you have flying capabilities.