I thought it was interesting he threw in the bit about the supply chain risk and Defense Production Act being inherently contradictory. Most of the letter felt objective and cooperative, but that bit jumped off the page as more forceful rejection of Hegseth's attempt to bully them. Couldn't have been accidental.

I see it as the opposite, its a lousy excuse of a message trying to get people not to think that they are giving in. Instead they list the horrible uses that they are already helping the government with. Dont worry, we only help murder people in other countries not the US. They also keep calling it the "Department of War" which means that this message is not for "us", its them begging publicly to Hegseth.