After the groan, a deafening silence.
A loud crash was heard from a distance, and a series of slowly-paced low rumbles followed.
The ceiling cracks as the rumble gets louder. Windows shatter and screams of panic were heard outside, racing footsteps joining the cacophony of chaos that envelops the entire scene.
Jack crawls desperately across the cafeteria, next to the table where his son is hiding. Whatever this is, he hopes that it passes over them harmlessly.