The people of Earth also became used to the small drones which occasionally float around looking at things. The true purpose of the Bell is to evaluate the Earth for invasion. At the heart of the Bell are two components which control everything, the red, and the blue. The two components must agree in order for any action to be taken. The Bell is an extremely large vehicle, so in order to carry out it's investigation, it launches drones to do the investigation.
Drones come in four forms.
The largest looks like a giant black top. It's sensors are long tentacles with seeing devices attached to the end. It does its searching by hovering around, while extending it's tentacles to look in places that it cannot go. The second type look like black spheres. These small globes are the most common to see hovering around the Earth.