Aaron remembers when he was younger, seeing a car overturned on the road. He saw the underbelly of the machine, all the moving subtleties working together to power a cohesive, shining whole. He's reminded of that moment now. Cars don't feel, though, and they aren't protective of their parts. After everything Daryl seems like he's been through (evident in how he prowls as he walks, the wary way he looks around them, his careful steps), Aaron won't take his secrecy from him.

He focuses on the second statement, possibly safer, definitely less personal. "'Someone'? You don't know who?"