Pathfinders are like drones for space, basically, active scanners that would zip around the planet collecting environmental information and terrain imaging, plus looking for comm signals, possible energy sources, and whatever might be planning to kill us. It’s the kind of thing that my ex-owner bond company did via satellite when they prepared to issue safety bonds for a newly opened survey planet. Except the company satellite would mainly be mapping the entire planet, and the pathfinders would be looking for potential locations where ART’s crew might be. They were really expensive, not something normal survey teams had access to. Arada was impressed.