This story doesn’t add up.

The Transportation Department’s inspector general says Dunn, who was the first officer or co-pilot, threatened to shoot the captain after a disagreement over diverting the flight to take care of a passenger with a medical issue.

So co-pilot said that a passenger has a medical issue, and the captain said no turning back.

And co-pilot said, turn back or I’ll shoot you.

There seems to be a lot missing here.