The career of Donald "D. J." Vodicka encompassed the rapid expansion of the prison system. For sixteen years, he was a prison guard in California's highest security prisons, serving meals to gang leaders, serial killers in lockdown cells, and patrolling exercise yards filled with violent felons while unarmed and outnumbered 1000-to-2. He belonged to an elite unit called the Investigative Services Unit (Internal Affairs), responsible for solving horrific crimes inside the walls. He was a decorated veteran officer. He became the largest "whistle-blower" to uncover a group of rogue prison guards who called themselves "The Green Wall." | The Green Wall by D. J. Vodicka, Paperback | Indigo Chapters