If and when there is a US Cyber Safety Review Board investigation of this incident, documents like that are going to be considered with great interest by the parties involved.

Often it is the engineers working for a heavily invested customer at the sharp end of the coal face who get a glimpse underneath the layers of BS and stare into the abyss.

This doesn’t look good, they say. It looks fine from up top! Keep shoveling! Comes the reply.