Ben had positioned himself by one of the stairways leading up to the Agricultural levels. He had been standing at the foot of those stairs, shoulder leaning against the wall. When Cho says she has to go up, he pushes off it, hands in the pockets of his jacket, body language indicating clearly that he is going, too.

"I was waiting for you."

He says it thinking it is the simplest possible explanation but immediately regrets it. With a slightly awkward laugh, he shakes his head and adds:

"Okay, that sounded bad. I meant, I was waiting for anybody in need of an escort."

God, this is what happens when you spend fourteen years as a ghost and the only one you can talk to is your brother. You lose the ability to have a conversation with a stranger without unintentionally sounding creepy and weird. Ben winces a little and once again amends his own words:

"No, that sounded worse actually. I just- I'll go up with you. If you want. And if anything attacks us, I can... help deal with it."

Ben knows he doesn't exactly look all that intimidating, but there's a plain confidence in the way he presents his ability to grapple with potential monster attacks that doesn't really fit with his harmless-seeming exterior.