In case of evacuation, what is the first action for the N3 regarding the MED?

When facing an evacuation scenario, the N3's responsibility concerning the Medical Emergency Device (MED) is to ensure it is operational and accessible. By opening the R-MED and pulling the manual inflation handle, the N3 is taking the necessary steps to prepare the emergency medical equipment for immediate use, which could be crucial in providing aid during an emergency.

This action ensures that any medical situations can be promptly addressed as the evacuation unfolds. The readiness of the MED can significantly impact passenger safety and health, allowing the crew to assist those in need while simultaneously managing the evacuation process.