How does Atlas catch Josh vandalizing his restaurant?

Atlas decides to spend the night at Bib's. He thinks the vandal will show up there because it is easier to break into. Atlas hides on the far side of the dumpster and reads Lily's journal as he waits. After reading a journal entry, he sees a shadow. A kid closes in on the back door. Atlas watches and sees him pull a can of spray paint. When he lifts it to spray, Atlas reveals himself and tells the boy he is holding the can wrong and shows him how it is done. Atlas can tell that the boy is his brother. Then he takes him inside and gets him something to eat.