The multi-faceted Jeffrey A. Lockwood (entomologist, professor of philosophy and creative writing at the University of Wyoming, and author of the book Six-Legged Soldiers: Using Insects as Weapons of War) warns (at Red Orbit) against overlooking ecoterrorists’ use of insects as weapons:

A great strategic lesson of 9/11 has been overlooked. Terrorists need only a little ingenuity, not sophisticated weapons, to cause enormous damage. Armed only with box-cutters, terrorists hijacked aircraft and brought down the World Trade Center … Insects are the box-cutters of biological warfare – cheap, simple and wickedly effective … Insects are one of the cheapest and most destructive weapons available to terrorists today, and one of the most widely ignored: they are easy to sneak across borders, reproduce quickly and can spread disease and destroy crops with devastating speed.