One of the best ways to prepare for interviews when you are trying to score an important position is to be up to date on issues of focus by senior leadership. Here are a few references of interest.
Secretary of Defense
The SecDef recently put out an unclassified message to his commanders. Here it is:
The new Surgeon General focuses on high reliability principles. If you need a primer on them, here is a good open access article from the Joint Commission:
Here is also an article he wrote: