He wasn't sure of their function, but he was sure they were a cloud of nanites, especially as his shot passed harmlessly through the cloud. Tiny, programmable robots, linked under a crude artificial intelligence; when used for a specific purpose, they could be extremely useful. When left alone for however long these have, on an unknown mission? Potentially extremely lethal.<br/><br/>Johanna didn't need any encouragement, as she fell back alongside him. The cloud swept across the area, gaining on them remarkably quickly, though they had enough of an advantage that they could stay out of range of it... for now.