Doomsday Device is a term used in professional wrestling to reference a tandem move in which one wrestler hoists the opponent on their shoulders so that they are facing in the same direction in what is known as the electric chair position, while another wrestler climbs the ring post to the top turnbuckle and delivers a flying attack on that prone opponent.
The wrestler facing the opposite direction of the opponent in an electric chair position delivers the flying attack on the next opponent. 
The statement belongs to Incorrect: The person in the electric chair position is facing the direction of the opponent and the flying attack is made by the prone opponent from the ring post so the statement is incorrect. 