Please excuse his sweatiness, and remember that we ARE trying to survive on a desert planet.
The radar station. Being that this is the highest point in the entire survivor camp, it was obvious that the radar station should be mounted up here.
The gun rack. Doug has taken the sniper rifle out with him on the balcony.
The roof. Those minifig stands are starting to get handy!
The tool supply. It used to be up in the tower, but it was very cramped and anyone who needed a simple screwdriver would have to climb up a two story ladder to get one. So, for the sake of the weaklings survival, we have placed the supply at the bottom of the watchtower.