What Are Generals Mattis & Kelly So Afraid Of?

Pragmatic top-down policy or anxious bottom-up babysitting?
Deep in the background of an AP report on the decision to replace Anthony Scaramucci with John Kelly, The Hill reports that two of President Trump's top advisers reportedly agreed in the early days of the administration that they would not leave the United States at the same time, in order to ensure they could monitor orders coming from the White House.