If Boeing is so vital they can nationalize it and place actual officials in charge. There's no legitimate reason not to yank the current suits out and throw them in a neglected muddy pit.
If it is vital to national security -- not disagreeing there -- it is paramount for everything and everyone to be investigated. You want the defense of NATO and the U.S. to be in the hands of people that can not deliver a plane?
Time for heads to drop and roll, and FBI (or any applicable agency, including DoD) to do a cleanup. That ideally should happen via the Courts too, but placing this under the rug is like inviting known enemies to utilize this weakness.