The letter, as disturbing as it is, says something that needs some clarification. One sentence states:
We are proud to work for airlines that have gone above and beyond the requirements of existing cargo regulations and that are at the forefront of fatigue risk management research.
One can almost read this statement as:
We are proud to work for airlines that are at the forefront of fatigue risk management research.
It kind of implies that these companies have actually researched or are currently researching fatigue on their own. Does anyone know if any of these companies have either conducted their own independent research on fatigue or sponsored or funded research on fatigue in any way? It's an important question that needs to be answered for various reasons, the most important reason being liability.
If they haven't researched fatigue and how it relates to human factors in flight operations, I'd like to know why not.