Destroyer Above

On a distant desert world, a long hot day finally comes to an end, but as artificial lights flicker into life on the horizon, 3rd shift is just beginning.
The large signal in the foreground indicates the presence of outbound trains in the yard preparing to depart for the mines far to the east of the facility.

Hovering above, a military space craft is passing through on its patrol through the mining system, the only defense such an isolated colony can expect so far out from other inhabited worlds.