Last summer, three peace activists — a drifter, an 82-year-old nun and a house painter — broke into Y-12, which is allegedly one of the most secure nuclear-weapons facilities in the United States.
May 6, 2013 Antinuclear activists, from left, Michael Walli, 64, Catholic nun Megan Rice, 83, and Greg Boertje-Obed, 56, arrive for their trial in Knoxville, Tenn. The peace activists, who belong to the group Transform Now Plowshares, said in court filings that after they refused to plead guilty to trespassing, prosecutors substituted that charge with a sabotage count that increased the maximum prison term from one year to 20 years. Michael Patrick/Knoxville News Sentinel via Associated Press