At the Interior Department’s headquarters in downtown Washington, Secretary Ryan Zinke has revived an arcane military ritual that no one can remember ever happening in the federal government.

A security staffer takes the elevator to the seventh floor, climbs the stairs to the roof and hoists a special secretarial flag whenever Zinke enters the building. When the secretary goes home for the day or travels, the flag — a blue banner emblazoned with the agency’s bison seal flanked by seven white stars representing the Interior bureaus — comes down.  

In Zinke’s absence, the ritual is repeated to raise an equally obscure flag for Deputy Secretary David Bernhardt.