Quote from : Close Encounters of the Third Kind Movie

Dirty Tricks #4: [Plotting about how to clear the Devil's Tower area of its population] Contaminated water. Affects people, crops, animals. Disease.
Dirty Tricks #3: Yeah, epidemic.
Dirty Tricks #1: What kind of disease?
Dirty Tricks #3: A plague. A plague epidemic.
Dirty Tricks #1: Nobody's gonna believe a plague in this day and age.
Dirty Tricks #2: *Anthrax.*
Dirty Tricks #4: Ranching country.
Dirty Tricks #3: Yes!
Dirty Tricks #2: There are a lot of sheep up in those hills.
Wild Bill: Wait, that's good, that's good, I like that. But it may not evacuate everybody. There's always some joker who thinks he's immune. What I need is something so scary it'll clear three hundred square miles of every living Christian soul.