The sixth installment to continue Hugh Howey's Wool series is a great background, filler story. 
 I know. For those of you who have read the Wool stories and loved them, that may seem like a letdown - filler. Sounds like something you can skip, huh? But, though First Shift simply tells us about how the silo story begins, Mr. Howey manages to do so in a unique way. 
 Though Donald/Troy is not as likable of a character as Wool 1's Holsten or Wool 2-5's Jules, Donald/Troy is someone we can relate to. I so very much wanted him to see beyond his own needs and view the big picture. But like us, he struggles to please those he thinks he should and not think for himself. I can only hope he can redeem himself in the next installment. 
 Highly recommended read. 
 (full review soon to come on my blog here)