LOST MASTERPIECE

Army ants attack a small Alaskan town in Legion of Fire: Killer Ants! The movie asserts that giant mutant army ants can devour a moose in 3 minutes...

The real thing is scary enough. The Army ant business model is so good it hasn't changed since the Cretaceous period. This page shows typical swarm deployments, and this one shows how their traffic patterns are optimal for transporting prey back to the nest. Fortunately for us, they're pretty dumb, and their traffic patterns are not without weaknesses, as this picture indicates. Here's probably a more detailed explanation than you wanted.