Chemical and radiological emergencies in or near a health facility can also disrupt the delivery of care.

Wars, cyclones, earthquakes, tsunamis, disease outbreaks, famine, radiological incidents and chemical spills - all are emergencies that, invariably, impact heavily on public health.

PHS Bureau of Radiological Health transferred to FDA. Its mission: protection against unnecessary human exposure to radiation from electronic products in the home, industry, and the healing arts.