Christian Peacemaker Team involvement with depleted uranium (DU) issues started in 2000 when the organization began sending delegations to join the residents of Vieques, Puerto Rico in their nonviolent efforts to oust the U.S. Navy from training/testing grounds in Vieques.  The Navy fired DU rounds into the Vieques bombing zone and this toxic, radioactive byproduct has affected the health of people living on the island.