Arctic Notebook, Feb. 21: Washington Times Defense and National Security Correspondent John T. Seward is on assignment in frigid northern Alaska, covering the U.S. Army’s “premier Arctic training exercise.” As tensions rise in the frozen north, Mr. Seward’s reporter’s notebook dispatches go inside his experience observing the American military’s preparation for combat in the sub-zero temperatures. FORT WAINWRIGHT — Today was my first day with troops in the direct fight, training ag...