Read the excerpt from act 2 of the monsters are due on maple street.

as they shout, accuse, scream, interspersing with cuts of tilt shots of houses as the lights go on and off and then slowly in the middle of this nightmarish morass of sight and sound the camera starts to pull away until once again we've reached the opening shot looking at the maple street sign from high above. the camera continues to move away. .

if changed, which detail would change this from science fiction to fantasy fiction?

lights going on and off in the houses as a result of electrical outages
lights going on and off in the houses as a result of supernatural events
people screaming and panicking because they glimpse a space shuttle
people screaming and panicking because aliens begin attacking them