This is an excellent story. It's a post-apocalyptic romance, for those that are interested. The action is gripping, the hero and heroine are interesting, and their interactions are believable.
This series is set in the immediate aftermath of Yellowstone's super-volcano blowing, and all that would change as a result. The hero's of each of the 5 books in the series are former Marines, all members of the same tank group, and also all orphans, so they've formed their own little family, viewing each other as brothers. The "Father" to their group is their now retired Master Gunnery Sargent "Tank". Even after being out of the Corps, they still meet at the fishing and hunting camp that Tank bought and runs at least once a year. This year, right after they all leave for home is when the Yellowstone caldera decides to blow. So each of them has to get back "home" to Tank, to help with protecting Tank's home--and the bunker that he's been preparing for just this eventuality.
I read all 5 of these books in one sitting, and the storytelling was so plausible that I'd have to stop every once in a while and peek out the curtains to make sure that there wasn't a massive fall of volcanic ash outside my window. Which tells you how accurate and well done Ms. Layne's descriptions of the fall-out from the eruption is.
Since I've said how good a job Ms. Layne does with her storytelling, I'm sure you are wondering, "Why only 4 stars?" The answer lies partially in my upbringing and partially in my OCD. I come from a family that has only 3 main occupations--teacher, military/cop and medical field. All 3 of these occupations are somewhat focused and intensely driven. The teacher parts especially. My Grandmother was a teacher, my Mum taught, my Dad taught college classes. Anyway, you get the idea. Ms. Layne's descriptions of the interaction of the guys was spot on, as was her description of the weapons--and the after effects of the use of those weapons on a human body--was also spot on. (My Dad was career Navy, he became a teacher after he retired.) I liked that she DID include those descriptions. I really hate reading a book and getting jarred out of the story because the author knows nothing about weapons and isn't willing to seek professional help for the descriptions of those weapons.
And, so we come to that pesky OCD. Unfortunately, Ms. Layne's editor was, frankly, useless. Using the wrong word--there for their, two for too, and many, many, many others. Not checking that a word used was the CORRECT word. I'm sorry but ENsure can not be used when you mean INsure. Normally, when a book has as many editing problems as were in Ms. Layne's, I am unable to finish it--and usually give the book 1 star (because we can't give zero stars.) The fact that Ms. Layne STILL got 4 stars, despite how badly my OCD was reacting to the editing problems tells you how strong of a storyteller she is.
So, read the book, enjoy the love story--both that between the hero and heroine and that between the guys, Tank and each other. Just be aware if you have OCD there will be wincing in your future.