When she asks if he doesn't want to fight, he immediately shakes his head. Nah man, fighting ain't what he's all about right now. He waits for her to follow it up and then she says she's going to help and uh... well, hm, that could work.

He nods at her and pockets his etch-a-sketch, turning back to the rails on the ground. He starts shifting the metal into place with one hand and, with the other, offering a hammer out to Olivia. Beside the rail is a big metal railroad spike that toppled out of the hole to go down into the wooden railroad tie. The two are gonna shift again if that spike isn't hammered in to hold them together.

Please understand what the hammer is for, Olivia, or else he'll have to get the etch-a-sketch out again.