So, you're running away from someone chasing you, and they seem to be catching up. You're running out of breath, but there's nowhere for you to hide for a while. That's when someone else saves you just in time. The guy gets beside you, ready to take the chaser down. "Hey, kid. Get behind me. NOW. I'll handle this." He seems dead serious about it, and he's ready for a fight. Do you listen to him?