An 84-year-old nun and two fellow Catholic activists have been sentenced to between three and five years in prison for breaking into the area around a US uranium storage bunker.
Sister Megan Rice and her accomplices, Michael Walli, and Greg Boertje-Obed, got onto the grounds of the National Security weapons complex in Tennessee and defaced the building in a peace protest.
Although there was never any danger of them reaching the weapons-grade uranium, the break-in raised security questions at the complex which is the primary US government storehouse for such material.
The three admitted spray painting peace slogans and hammering on exterior walls of the facility. When a guard confronted them, they offered him food and began singing.
The three were convicted by a federal jury last May of damaging national defense premises under the sabotage act.
The activists have received more than 2,000 cards and letters of support from around the world.