Screwdrivers and duct taped on wires can be remarkably effective at bypassing switches and relays. And having a random private stand around and poke something

Screwdrivers and duct taped on wires can be remarkably effective at bypassing switches and relays. And having a random private stand around and poke something with a screwdriver when you want something to explode is, well, pretty much how much of the military works anyway.