"They don't go away," Cassian says, meaning the good and the bad. Saying May the Force be with us as a token sort of salute is the closest he's ever come to believing in unseen powers but after days of listening to Chirrut's quiet chanting and absolute surety of belief, it hurts a little less to tell himself that they really are one with something larger. It's better than just being dust without meaning on a broken world that none of them called home.

But he also means the nightmares, something he thinks Jyn already knows. The losses of that day are just new fodder for his brain to grind out behind his eyes when he tries to sleep, reminders of the ways he failed and the people he's hurt. He wishes he didn't care. He'd regret getting Jyn to care if not for the way it had lit her up for what seemed like the first in a long time.

It will be a long time before he sleeps easily. A long time that might turn into forever.