It's the middle of the night. Hannah's dad says they're just going to Auntie Claire's for a visit, but they both seem really scared, almost like they're fleeing for their lives instead.
Dirty Harry was his dad's hero, but Cal's hero was his dad. Cal spent his whole life trying to make his dad proud, but now that it's the end of the world, Cal realises he's spent his whole life letting everyone down.