Indeed, they are very much linked:
So towards the end of a typical military crew duty day I have the equivalent of 0.07 to 0.09 blood alcohol.
The medics define the behaviour as:
-Blunted feelings
-Disinhibition
-Extroversion
The medics list impairments to the following:
-Reasoning
-Depth perception
-Peripheral vision
-Glare recovery
Yet the MoD calls it:
-A perfectly acceptable time to try and land the aircraft