"Yes, and you seem to be good at running." Brennan responded before really being able to check himself. Sometimes he was just in a bad mood and, honestly, today was one of those days, and that also meant it was one of the days where he knew if he saw David, he wouldn't be able to help just laying into the guy about everything in spite of the fact that, when not completely sour, he tried to admit that David sometimes might have tried to do his best. Unfortunately for David, every time Brennan considered giving him some sort of credit, he would catch him outside hunting ghosts or engaged in some other worthless occupation, and any good thoughts went right back out the window.
Brennan was never the kind of person to get enjoyment from annoying or hurting others; it was just something he did, and usually he just said the things he did to prove a point or try to be helpful, so seeing David react, only by expression, like always, to the things he was saying didn't really rile up any feelings of pride or success, though he was slightly annoyed that David never really said anything in defense of himself, and that just sort of drove him crazy. Maybe the reason he was so villainised on this island by a small clique was because his guy couldn't hold his own against someone else and they just thought Brennan picked on him because he was an easy target. To be fair, he was just about as equally hard on everyone else, they just seemed to take it better than David did.
"Safety is relative. There might not be any runners, but the swimmers are no less of a threat." He stated, slowly bleeding the preachy tone from his voice, as it was only making this whole conversation more frustrating. David always looked like he was shrinking whenever he was around and his habits, like chewing on his lip, just made Brennan think he was some sort of child. "They don't seem to die outside of the water, they just move slower. They have a large amount of upper body strength, however, so I'd suggest taking them out from as far away as possible." The information was almost clinical, but mostly because he wasn't coloring it with any emotion; he genuinely shared information he gathered with people, because they were all just trying to survive.