If you don't understand what a HERF projector is, let me explain.
There is a part in your microwave called a magnetron it makes microwaves that excite water particles in food... Excitement equals heat.
If we remove the magnetron, and add a wave guide and a reflector or antenna horn, we can direct this energy into the atmosphere (preferably away from the face, microwaves can cause cataracts, kinda like an egg in a frying pan... Not good). Now, since this energy can excite molecules and thus electrons, lets irradiate some electronics... This causes electronics to fail horribly...
Can anyone think of any... evil uses...