The nurse educator is educating new staff nurses about mass casualty events. Which statements by the new nurse indicate a need for further teaching? (Select All That Apply)

"A mass casualty event occurs if a fight between visitors occurs in the emergency department."

"Mass casualty events do not require an increase in the number of staff that are needed."

"A mass casualty event only occurs within the health care facility and could endanger staff."

"An event is termed a mass casualty when it overwhelms local medical capabilities."

"Mass casualty events may require the collaboration of many local agencies to handle the situation."