'Not afraid' doesn't mean 'totally chill about it.' Finn's pretty sure this guy isn't Force-sensitive, but it's definitely something similar if he isn't. But before he can claim to be 'totally chill about it,' anyway, Blue seems to give out.

"Hey!"

Finn jolts forward and catches him before he can hit the ground, lowering them both down until he can get a better look at the guy. "Hey, you okay? Can you hear me?"