title: Officer down.
authors.affiliation: Division of EMS, Section of Emergency Medicine, Yale University School of Medicine, New Haven, Connecticut, USA. donald.macmillan@yale.edu
authors.forename: Donald S
authors.initials: DS
authors.lastname: Macmillan
authors.forename: David C
authors.initials: DC
authors.lastname: Cone
mesh_terms: D000328:Adult; D016887:Cardiopulmonary Resuscitation; D003441:Crowding; D004634:Emergency Medical Technicians; D004638:Emergency Treatment / Q000523:psychology / Q000592:standards*; D006801:Humans; D007103:Immobilization; D007400:Interprofessional Relations; D007442:Intubation, Intratracheal; D008297:Male; D016495:Police / Q000592:standards*; D012637:Security Measures; D013131:Spine / Q000502:physiology; D014948:Wounds, Gunshot / Q000628:therapy*