The Secret Service couldn't protect the White House, and so now it's being forced to clean its own house.

The agency said Tuesday it was sweeping out four assistant directors, and a fifth had already announced his retirement. Acting Director Joseph Clancy gave the bosses of four divisions—protection, investigations, technology and public affairs—a month to clean out their desks. (They can retire, or request reassignment elsewhere in the Department of Homeland Security, which houses the Secret Service.) The Washington Post's Carol Leonnig, who has consistently broken news about the Secret Service's chaos, had the scoop.

On one level, these departures are inevitable. The Secret Service has presided over a series of missteps that would be comical if it wasn't the main line of defense protecting the president, his family, and other leaders. There was the prostitution scandal in Colombia. There was the botched handling of a 2011 shooting. There was the intruder who made it over the White House fence and well into the building before being apprehended. And there were other, smaller errors, too. Director Julia Pierson was already forced to step down, and press reporting and a panel commissioned by the DHS revealed such deep systemic problems that a housecleaning was clearly in the cards.