One thing I found was the story felt to drag on at times, but looking back after finishing it, I think that it wasn't really that anything wrong with the book. Rather, I found while reading that I was comparing Vanished to another non-fiction book around a WWII plane going down in the Pacific, Unbroken by Laura Hillenbrand. That story of Louie Zamperini and his life probably was more more compelling for a reader as the subject such an amazing one, but Vanished was a really well done work on people that might have been otherwise forgotten. Also, it doesn't seem a stretch at all to say this idea of not forgetting people who sacrificed their lives to be one of Scannon's primary motivations.
The research by Hylton into the book felt to be pretty exhaustive while reading it and this showed in the notes and list of sources, which included mention that the cover photo for the book taken by combat photographer Tim Hetherington who died during an attack two years ago in Libya.
Both before starting and I was reading, I came across a number of positive mentions of the book by other writers whose work I find to be excellent and the tweet below from Hylton contains a short and seemingly spot-on review by Luke Dittrich.
Could not be happier about this review in Esquire. pic.twitter.com/6aVoJvg6CT
— Wil S. Hylton (@wilshylton) November 23, 2013