I spent 10 years on the corporate risk committee at the company I retired from. Saying there is no risk associated w/ letting the Rockies employee sit in the pilot seat (or even letting any seemingly non-threatening/sane person in a cockpit) doesn't know the mathematics of risk, even with the limited data available on accidents associated with such events. One negative event automatically makes the risk non-zero. Even without a previous event the chance something bad happening has to be recognized.