Excerpt from Redeployment by Phil Klay, plus links to reviews, author biography & more

Here's what orange is. You don't see or hear like you used to. Your brain chemistry changes. You take in every piece of the environment, everything. I could spot a dime in the street twenty yards away. I had antennae out that stretched down the block. It's hard to even remember exactly what that felt like. I think you take in too much information to store so you just forget, free up brain space to take in everything about the next moment that might keep you alive. And then you forget that moment, too, and focus on the next. And the next. And the next. For seven months.

So that's orange. And then you go shopping in Wilmington, unarmed, and you think you can get back down to white? It'll be a long fucking time before you get down to white.

By the end of it I was amped up. Cheryl didn't let me drive home. I would have gone a hundred miles per hour. And when we got back, we saw Vicar had thrown up again, right by the door. I looked for him and he was there on the couch, trying to stand on shaky legs. And I said, "Goddamn it, Cheryl. It's fucking time."

She said, "You think I don't know?"

I looked at Vicar.

She said, "I'll take him to the vet tomorrow."

I said, "No."

She shook her head. She said, "I'll take care of it."

I said, "You mean you'll pay some asshole a hundred bucks to kill my dog."

She didn't say anything.

I said, "That's not how you do it. It's on me."

She was looking at me in this way I couldn't deal with. Soft. I looked out the window at nothing. She said, "You want me to go with you?"

I said, "No. No."

"Okay," she said. "But it'd be better."

She walked over to Vicar, leaned down, and hugged him. Her hair fell over her face and I couldn't see if she was crying. Then she stood up, walked to the bedroom, and gently closed the door.

I sat down on the couch and scratched Vicar behind the ears, and I came up with a plan. Not a good plan, but a plan. Sometimes that's enough.

There's a dirt road near where I live and a stream off the road where the light filters in around sunset. It's pretty. I used to go running there sometimes. I figured it'd be a good spot for it.

It's not a far drive. We got there right at sunset. I parked just off the road, got out, pulled my rifle out of the trunk, slung it over my shoulders, and moved to the passenger side. I opened the door and lifted Vicar up in my arms and carried him down to the stream. He was heavy and warm, and he licked my face as I carried him, slow, lazy licks from a dog that's been happy all his life. When I put him down and stepped back, he looked up at me. He wagged his tail. And I froze.

Only one other time I hesitated like that. Midway through Fallujah, an insurgent snuck through our perimeter. When we raised the alarm, he disappeared. We freaked, scanning everywhere, until Curtis looked down in this water cistern that'd been used as a cesspit, basically a big round container filled a quarter way with liquid shit.

The insurgent was floating in it, hiding beneath the liquid and only coming up for air. It was like a fish rising up to grab a fly sitting on the top of the water. His mouth would break the surface, open for a breath, and then snap shut, and he'd submerge. I couldn't imagine it. Just smelling it was bad enough. About four or five Marines aimed straight down, fired into the shit. Except me.

Staring at Vicar, it was the same thing. This feeling, like, something in me is going to break if I do this. And I thought of Cheryl bringing Vicar to the vet, of some stranger putting his hands on my dog, and I thought, I have to do this.

I didn't have a shotgun, I had an AR-15. Same, basically, as an M16, what I'd been trained on, and I'd been trained to do it right. Sight alignment, trigger control, breath control. Focus on the iron sights, not the target. The target should be blurry.

Excerpted from Redeployment by Phil Klay. Copyright © 2014 by Phil Klay. Excerpted by permission of Penguin Press. All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher.