Frowning down on the boy, and that's exactly what he was, a pretty young one, Sarge tried to make a decision. He looked worn out and was too thin to be even remotely healthy so he must have been through a lot and probably didn't have anyone that took care of him. Muttering a few choice words he carefully crouched down, one knee bent so he could get up quickly if needed, even though the kid didn't seem like he could swat at a fly. Sarge might be prone to make some really bad decisions, but he isn't stupid. Or suicidal.
He takes off his backpack, slowly as if he is dealing with a spooked animal. Something about this boy is weird and creeps him out severely, but he still pulls a bottle of water out of his bag and holds it out. "You thirsty, kid?" Because he sure looks like he needs something to drink. Sarge could use something himself, but would prefer something a little more potent. It occurs to him that he doesn't really know what to do with this person, and he frowns some more.