In a series of messages sent through the encrypted app Signal, according to the book, Nielsen informed her chief of staff, Miles Taylor, that five of the most senior officials in the administration were on the verge of resigning as a group.
White House chief of staff John Kelly was eyeing the exits. And Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, Defense Secretary Jim Mattis, Education Secretary Betsy DeVos, and Interior Secretary Ryan Zinke, she wrote, were "wanting to go with Kelly" and call it quits.
"Alas," Taylor said, "then we have some planning to do."
"Yeah," Nielsen said, according to the book, adding, "Okay for the first time I am actually scared for the country. The insanity has been loosed."