NNSA's RadSecure 100 Initiative focuses on enhancing radiological security in our largest cities, where facilities with the highest priority materials are located, including cesium-137, cobalt-60, americium-241, and iridium-192. The RadSecure 100 Initiative targets 100 major metropolitan cities across the U.S. by providing federally funded security enhancements to facilities that use high-activity radioactive materials and to businesses that use mobile radioactive sources. Additionally, NNSA's Office of Radiological Security provides training for facilities’ security personnel and law enforcement, and where possible, removal and replacement of cesium irradiators with X-ray devices. Children’s National Medical Center, a Level 1 Trauma Center that sees over 400,000 visits a year located in Washington, D.C., partnered with ORS to remove and replace its cesium blood irradiator with an X-ray device.