Trump's erratic behavior at the end of his term alerted generals, according to new book

The chairman of the Joint Chiefs of Staff, Gen. Mark Milley, feared that Donald Trump would attempt a coup after losing the election, according to "I Alone Can Fix It."

The book written by Carol Leonnig and Philip Rucker, journalists for The Washington Post, narrates Trump's last year as president and his behavior in the face of electoral defeat.