This just wasn't my cup of tea. While so many YA authors are far surpassing their audience in their maturity, this one panders to it. Big bad organization with a cliche for a name. Action scenes drawn from action "soldier" movies. Crazy zombies.
Really, dude, just pick a direction. Either commit to sci-fi or your characters. But please, choose one.
I'd highly recommend this to our local high school librarian. The reason? It's a little boy's book. It's full of all the things boys love - stuff blowing up, people shooting and getting shot, guys who tough out their mortal injuries by just sucking it up. even pilot-plane guy who seems to have no trouble having money, inside information, or the ability to fly. Good grief. I felt like I was watching some version of "The Expendables."
So if you're a tween-age boy, definitely read this. You'll love it. Otherwise, don't bother.