An AED (automated external defibrillator) is a device that gives the heart an electric shock when someone’s heart has stopped (cardiac arrest). You can use an AED on children over one year old and adults. Ambulances have them on board, but using an AED in the minutes before an ambulance arrives can double someone’s chances of survival. So it is up to bystanders quickly to find the nearest defibrillator. The idea for this is to put a unit on Tranent High Street which contains a Defibrillator, hopefully we will never have to use it but it is there if we need it.