on their back in a laying position
aD
Pain and shock.
Because the person in shock will choke on the food or drink
They should be placed on there back. (The supine position)
Possibility of shock.
So the electric currents from the AED do not transfer from the victim to yourself, thus, you yourself becoming a victim of shock if exposed to the currents.
The person touching the victim will also receive an electric shock (not as powerful as the victim but a shock none the less).
Insure there is no pulse before you attach the pads to the victim.
If you touch the victim while an AED is delivering a shock, you too will receive a shock.
So no other person but the victim gets the shock.
Resume CPR immediately.
Leave the AED attached and place the victim in the recovery position by rolling them onto their (preferebly left) side.