PTSD is an acronym
That cannot be seen on any film.
Not even the strongest MRI
Can begin to explain or tell us why
You've turned into the man you are
Since you returned from that Iraq war.

So I'm leaving and I'm taking Charlotte, too.
I cannot be sure exactly what you'll do
Now that you are this whole new you.

Once I'd have sworn you'd never raise your hand
To harm a fly; let alone a man.
Now I think that you could kill
Your entire family and at will.

Maybe one day science will find a way
To analyze the mind's decay.
But until then we'll be elsewhere.
Good luck, John. From your wife, Claire.