By Lynne Curry There were signs of potential disaster that later erupted in six deaths when Walmart supervisor Andre Bing shot and killed six coworkers in November. There always are. Four decades of investigating violent workplace incidents have convinced me of this. “I didn’t want to say anything,” someone always says, “but….” “That was just ‘Jon,’ but we all sort … [Read more...] about Signs of potential disaster were present at Walmart—Are they at your workplace?