Chapter 10: Concepts of Emergency and Disaster Preparedness MULTIPLE CHOICE 1. A hospital responds to a local mass casualty event. Which action should the nurse supervisor take to prevent staff pos t- traumatic stress disorder during a mass casualty event? a. Provide water and healthy snacks for energy throughout the event. b. Schedule 16-hour shifts to allow for greater rest between shifts. c. Encourage counseling upon deactivation of the emergency response plan. d. Assign staff to different ro...