He's gone. Robert is gone. Off to do his duty.
Shaun hasn't spoken in a long time, so it's safe to assume that he's gone, too. Taken or on the run, I don't know. I hope he's still out there, running.
"And I find myself questioning all that I have done
And I'm trying to press the button to rewind
And I find myself whispering "There's more I could have done"
And I wish I had the option to rewind"