This can be one of the more challenging aspects of survival, as they are many ways to kill a zombie. Brooks dedicates a chapter to weapons and combat techniques. First, it is best to determine how quickly you can incapacitate, or decapitate, your zombie. As professor Neil Ferguson told the BBC, "My understanding of zombie biology is that if you manage to decapitate a zombie, then it's dead forever." As Brooks suggests, this can be done in close combat with power tools. A crossbow or hand bow can be useful for those skilled in using them. Any sort of firearm will work, as will Molotov cocktails, flamethrowers and blowtorches. But be sure to know how to wield your tools skillfully, as they can easily be turned on living humans.