In September 2013, a TSA screener at Los Angeles International Airport was arrested a few hours after resigning for making threats against the airport on the anniversary of 9/11. In December of that year, the FBI arrested an avionic technician at Wichita Airport for plotting a suicide attack using an improvised explosive device.
These are just a couple of examples of employees who became a significant threat in the workplace. However, workplace threats are not limited to “home-grown” terrorists, radicalized by Islamic militarism. It also includes the careless employee, who unintentionally downloads a virus that infects your company’s computer network, or the disgruntled employee who acts unprofessionally with a customer. You may remember the JetBlue Flight Attendant, who became a YouTube sensation, when he quit his job by yelling a few choice words to passengers, grabbing some beers for the road and using the plane's emergency chute to exit the aircraft.