Getting Korra to the clinic had been his first priority-- not that he didn't think she was capable, but whatever happened to her had taken a lot out of her. And then, there was the bombs. So, his second priority had been getting to the Earth Sector to check on his brother. He was still concerned about the foreigner and his strange weapon, but he'd think about that later when everything wasn't happening all at once.

So of course, by chance, the issue would be forced when he practically ran into said foreigner, while trying to get to his brother's home. He skids to a stop, ready to fight if the foreigner proved too jumpy, and trying to not be overtly angry about what had happened to Korra.

He didn't care about faults or who started it anymore, especially not when she was no longer in danger. But... Whatever had happened, he was aware it could happen to him too, and the last thing he wanted to do was to knock himself out of the game. He frowned at Joel.

What is he doing over here? Mako thought to himself, before speaking pre-emptively. "I'm looking for my brother, not trying to hurt you." He couldn't even spare pretend friendliness. He was pretty sure the foreigner didn't trust him, and he didn't trust the foreigner.