Was this guy following NFPA 70E rules? Most likely not. Rarely do we see any burns when NFPA 70E is followed. Work in a data center must often be done live. If proper electrical safety rules are followed, most folks walk away with little or no injuries. Eaton has some NFPA 70E trainers and I think they are mostly compliant but big companies have a tough time getting everything across the board compliant esp. in small divisions.