The emergency department nurse receives a telephone call and is informed that a tornado has hit a local residential area and numerous casualties have occurred. The victims will be brought to the...

The emergency department nurse receives a telephone call and is informed that a tornado has hit a local residential area and numerous casualties have occurred. The victims will be brought to the emergency department. Which should be the initial nursing action?

1. Prepare the triage rooms. 2. Activate the agency emergency response plan. 3. Obtain additional supplies from the central supply department. 4. Obtain additional nursing staff to assist with treating the casualties.