Below, we spoke to Friend about his characters dramatic change.
Not with fanfare and streamers, like maybe it was 100 or 50 years ago.
But modern warfare spits veterans out and forgets about them.

Credit: Jim Fiscus/SHOWTIME
But chemical warfare now is a whole other horror story.
It wasnt necessarily clear what was happening to him.
I spoke with doctors, neuroscientists, veterans.
Weirdly, YouTube was incredibly helpful.
Theres a huge sense of community and generosity.
It seems like such a delicate thing to pull off.
A few degrees too much it becomes like a caricature.
Its not respectful and not interesting, and it gets boring quickly.
Its a weird thing to try and imagine your entire neurological pathway has been short-circuited and re-wired badly.
But I think the hardest thing for Quinn is his confusion Is this really what Im seeing?
The place where we shot the Veterans Administration was beyond depressing.
This is your life.
Theres a genuine thing hes saying to Carrie,Will you just give up on me because I have.
I think its risky and I like that.
Some will say, But wheres my old friend?
But thats not the way the world works and I applaudHomelandfor its bravery.
MoreHomelandpremiere coverage:Interview with showrunner Alex Gansa
Homelandairs Sundays on Showtime.