As the Leader of one of the Units, Stella had learned how to always read her surrounding.
It was a crucial part of being a Leader, after all, she would be the one to inform her members immediately, if anything was going wrong.
Though, the Leaders always train their members to do the same thing, but the way the leader does his or her own would always be different, except that particular member was exceptional.
Stella hadn't even seen it, yet she could already tell that something dangerous........ something really dangerous was here.
The feeling that she was having at the moment wasn't normal, and she knew that it was caused by something.
Another thing was that, the Rogue Humans were approaching, so she knew that that thing she was sensing was also a Rogue Human, but this feeling made it clear that this particular Rogue Human was on a different level entirely.