Not sure why anybody is giving the RAA any credance at all on this issue. The NASA study was on long haul trans and inter-con flights... To take the NASA study out of context and apply it to 2 hour legs or less is a jackass maneuver.... Perhaps that explains why it was on CNN. If you can't stay awake for two hours, do the rest of us a favor and call fatigued.... and would the newbies please stop yawning over the radio while talking to ATC....