Audio problem: Throughout Corwin's scene with the two children on the street, and through Rod Serling's subsequent introduction to the episode, you can hear the loud hiss of fan blowers used to waft artificial snow onto the set. (00:04:50)
Mr. Dingle, the Strong - S2-E19
Audio problem: The sound of the table breaking begins before Mr. Dingle hits it.
Answer: It's explained in the episode. The aliens are experimenting to see how humans react to various scenarios. This just happens to involve them using super strength.
Thanks. It's been a long time since I saw the episode so I forgot.