Not to mention 6 legs, no autopilot, crappy weather. They had a duty in time of about 05:30, which meant they were probably up at 04:00, maybe earlier. Not sure what time they went to bed the night before, or if they were on duty the day before, but that would have been a factor too.
Been there, would have done that, but for the grace of God, some luck, and having good pilots sitting next to me.