There is a vast military complex deep in the hills of eastern Tennessee called “Y-12.” This is where all of the highly enriched uranium is produced and stored for the production of the U.S. nuclear-warhead arsenal. It is in Oak Ridge, the city that was created practically overnight during World War II, that produced the uranium for the atomic bomb that was dropped on Hiroshima on Aug. 6, 1945. Today, the facility, dubbed “The Fort Knox of Uranium,” holds enough of the radioactive element to make 10,000 nuclear bombs. It was there, in the pre-dawn hours of July 28, 2012, that three “Plowshares” peace activists, including an 82-year-old nun, penetrated the facility’s myriad security systems and got to the heart of the complex, the Highly Enriched Uranium Materials Facility, or HEUMF. They spray-painted messages of peace on the wall, poured blood, hammered on the concrete and were arrested. Earlier this month, a federal appeals court overturned their convictions for sabotage, setting them free after two years in prison. This was the first time convictions for sabotage for Plowshares activists have been reversed.