title: Introduction.
authors.forename: Jacqueline P
authors.initials: JP
authors.lastname: Williams
authors.forename: Amy K
authors.initials: AK
authors.lastname: Huser
authors.forename: David J
authors.initials: DJ
authors.lastname: Brenner
mesh_terms: D004189:Disaster Planning / Q000639:trends*; D006801:Humans; D011832:Radiation Injuries / Q000175:diagnosis* / Q000628:therapy*; D011835:Radiation Protection / Q000379:methods*; D023481:Terrorism