DS - guardian prototype

Trying to figure out how they fly/float/travel around the city, "protecting" the edges. I feel like it has to involve the skysquids somehow, otherwise why wouldn't they use the same technology that the guardians are powered by to fly their ships? (Or, maybe, it would be too costly on a larger scale, people are profiting from the exploitation of the squids and therefore their use continues.) Anyhow, still trying to figure out the details, but these models of the 'Oids are much less human-appearing, and they are more or less the police of the city, who have little or no interaction with the general public. The 'Oids higher in the hierarchy are more humanoid, and they are the ones who actively interact with the general populace.