I love that Cass knows whose grave this is before Bruce speaks Jason's name.
My impression about Bruce talking to Cass is that one, she was the one seeming disturbed, and second, she's the only one who understands the Mission as he does. I get the feeling that he hasn't talked to anyone about Jason in a long, long time. He wouldn't have said so much otherwise.
"But then, he doesn't welcome anybody with open arms." I imagine Jason dying killed that buzz very dead.