In December 2016, the Department of Homeland Security published a new guide to assist in the protection of first responders in the event of improvised nuclear device (IND) explosion. The intent of the guide is to help ensure the immediate health and safety of first responders for the first 24-72 hours following a blast.

A DARPA program aimed at preventing attacks involving radiological “dirty bombs” and other nuclear threats has successfully developed and demonstrated a network of smartphone-sized mobile devices that can detect the tiniest traces of radioactive materials. Combined with larger detectors along major roadways, bridges, other fixed infrastructure, and in vehicles, the new networked devices promise significantly enhanced awareness of radiation sources and greater advance warning of possible threats.

Recently, the Domestic Nuclear Detection Office (DNDO) helped plan and conduct an exercise of the United States’ capability to collect radioactive evidence in the immediate aftermath of a nuclear detonation. The exercise scenario included the detonation of an Improvised Nuclear Device in an urban setting. In a real event, the evidence collected helps identify the source of the device and those responsible for its use.