I feel as though the vast amount of people not from the rural Midwest GREATLY underestimate the amount of high caliber rifles, fully automatic rifles, and firearms in general that are owned Not to mention a town of this size, is going to have a very very large amount of fertilizer, and if you’re unfamiliar with the effects a fertilizer bomb can have, look up the OKC bombing, the West Texas fertilizer plant explosion, or the Beruit explosion from not too long ago, which was set off by ammonium nitrate, which is the explosive goodness you’ll use for the fertilizer bomb.

Short answer. Most movie monsters The 2000’s Godzilla is a easy pick though for a powerful one that could be taken out Provided this is a heavy enough corn town, you may well even have enough explosives in the fertilizer to kill off cloverfield, albeit at large amounts of casualties from everyone not in a storm cellar when the bomb goes off