fatigue
@bobbsy
I also agree that many worker's work to long a shift and pilots in line with any driver's of trains, buses ect have to be 100% focused on the job,
is it a common occurance for pilots to sleep on the job?
I dont think train/bus driver's do whatever the hours worked and onset of shift?
If they were asleep naturally they are out of order, if they were put to sleep by contaminent then that's a different matter altogether,
best wait and find out what really happened hey?