…Michelle and I boarded Air Force One for the last time and traveled west for a long-deferred break. The mood on the plane was bittersweet. Both of us were drained, physically and emotionally, not only by the labors of the previous eight years but by the unexpected results of an election in which someone diametrically opposed to everything we stood for had been chosen as my successor. Still, having run our leg of the race to completion, we took satisfaction in knowing that we’d done …