Lots of action and the dialogue is good. As always Jeffrey Kafer performed all characters beautifully. Marco, the protagonist is intelligent and has leader potential. This first book in the series contains mainly their training to graduate as privates in Human Defence Force to fight the aliens who have been at tacking the humans and taking them as food. Interesting concept. Daniel Arenson is a good writer. There quite a number of books in this series which is already in Audible and I am happy about that. I will be continue the series without waiting anxiously for the next book to be published! Thank you Audible.