What is "when joanne returns with the aed?

When Joanne returns with the AED, it signifies that she has brought back an Automated External Defibrillator, which is a portable device used to treat sudden cardiac arrest. An AED delivers an electric shock to the heart in order to help restore its normal rhythm, and can greatly increase the chances of survival for someone experiencing a cardiac emergency.

Having an AED on hand is crucial in emergency situations where someone's heart has stopped beating, as it can quickly and effectively deliver the necessary shock to help save their life. Joanne's action of returning with the AED demonstrates her quick thinking and preparedness to assist in a life-threatening situation.