On July 28, 2012, three senior citizens broke into one of the most secure nuclear-weapons facilities in the world. An 82 Catholic nun, a Vietnam veteran, and a house smeared the walls with human blood and spray-painted quotes from the Bible. Then they waited to be arrested. This simple act spawned a complex discussion. In Almighty, Washington Post writer Dan Zak examines how events over the past 70 years led to this act, one of the most successful and high-profile demonstrations of anti-nuclear activism.