There once was a war in a faraway place called Rhodesia,  in southern Africa. In that place, a government-sanctioned, clandestine chemical  and biological warfare program targeted guerilla fighters and the agriculture  that supported them. People and animals died. What happened there provides  important lessons for food and agriculture defense professionals. A relatively  recent somewhat obscure book, Dirty War–Rhodesia and Chemical Biological Warfare 1975-1980, by Glenn Cross, details  these lessons.
Although little is known about the results of  Rhodesia’s chemical and biological war, its low-tech approach, using easily  obtained ingredients, is a warning in these uncertain times. Three lessons  learned: 
Complex environments can rapidly degrade, sometimes fomenting  violence. Put into the modern context,  think in terms of ISIS and North Korea and their conflicts with other nations. Both  of these adversaries, like the Rhodesians, believe their cause justifies their  use of violence. Your food corporation’s potential adversaries, whether  individual or a group, are convinced they are righteous in targeting you. They  might not care about the innocent lives that could also be lost. Adversaries totally  lacking governors on their actions will stop at nothing and therefore cannot be  convinced or persuaded to cease doing the bad that they are trying to do. 
There once was a war in a faraway place called Rhodesia,  in southern Africa. In that place, a government-sanctioned, clandestine chemical  and biological warfare program targeted guerilla fighters and the agriculture  that supported them. People and animals died. What happened there provides  important lessons for food and agriculture defense professionals. A relatively  recent somewhat obscure book, Dirty War–Rhodesia and Chemical Biological Warfare 1975-1980, by Glenn Cross, details  these lessons.
Although little is known about the results of  Rhodesia’s chemical and biological war, its low-tech approach, using easily  obtained ingredients, is a warning in these uncertain times. Three lessons  learned: 
Complex environments can rapidly degrade, sometimes fomenting  violence. Put into the modern context,  think in terms of ISIS and North Korea and their conflicts with other nations. Both  of these adversaries, like the Rhodesians, believe their cause justifies their  use of violence. Your food corporation’s potential adversaries, whether  individual or a group, are convinced they are righteous in targeting you. They  might not care about the innocent lives that could also be lost. Adversaries totally  lacking governors on their actions will stop at nothing and therefore cannot be  convinced or persuaded to cease doing the bad that they are trying to do. 
A disgruntled employee, for example, is not reacting  to a single perceived slight, but instead is far more likely to be a cauldron  of anger, resentments and jealousies built up over a long time, likely starting  long before that person became your employee. A powder keg with a lit fuse may  explode, and a disgruntled employee whose resentments are allowed to escalate may  resort to violence. Food corporations have to act decisively when Human  Resources (HR) matters arise or else risk situations that may endanger  employees and the public, cause liability, or damage brand quality and the  bottom line.  
Agriculture and industrial chemicals can be used as  chemical weapons. These include  highly toxic warfarin and thallium (used in rodenticides), methyl parathion (a  now-prohibited ingredient in organophosphate pesticides), sodium fluoroacetate  (used in rodenticides and pesticides), cyanide, and arsenic. Because of their  nature, these chemicals tend to be regulated or controlled, or at least draw  government attention if bought or used in unusual quantity. Adversaries tend to  want to use chemicals that are easily obtained as well as highly toxic, so they  respond to this government surveillance by migrating toward less toxic but more  readily available industrial chemicals, lubricants and cleaners. Be aware of chemicals  on-site and how or where contaminants might be introduced into your food  products, systems, and processes. And don’t think only in terms of industrial  chemicals. Unlabeled ingredients are increasingly causing large-scale (read very expensive) recalls. Don’t let them  be introduced, whether intentionally or accidently, into your food products.     
Pathogens can be obtained from common sources and then  weaponized. The Rhodesians  allegedly obtained Vibrio cholerae (cholera),  Bacillus anthracis (anthrax) and  possibly botulinum toxin (botulism) from agricultural, environmental and  medical sources and then developed them into biological weapons used to target  guerilla forces and agricultural animals. Evidence related to these claims is  scant and in some cases disputed. Whether all claims are accurate is immaterial;  what matters is that persons with technical knowledge and access to relatively  unsophisticated equipment were able to isolate and propagate pathogens that  could cause illness or death. Trained individuals who are motivated to cause  harm can be exceedingly dangerous. The largest documented bioterrorism attack  on American soil occurred in 1984 in The Dalles, Oregon, when followers of  Bhagwan Shree Rajneesh tried to influence local elections by contaminating  salad bars in 10 restaurants with Salmonella.  Be especially aware of any disgruntled employee who also possesses technical  knowledge. Combined with access, this is a formula for tragedy.