Frank McAlister was watching his son Ted take a picture with Lou Ferrigno and the pair were in the midst of a meet and greet with the actor when Ferrigno noted something was off about Ted.
The two men then sprang into action and helped Ted to the floor after it became apparent that he was having a seizure, and kept Ted calm while they awaited the arrival of EMTs.
Concerned, The Incredible Hulk actor leaned over to Frank and informed him that his son was shaking and attempting to say something but that he could not understand him.