Elliot Ackerman served in the Marines, then in the CIA, and now is a best-selling author, including with friend of the show Admiral James Stavridis on a series of realistic but futuristic geopolitical fiction, which include 2034 and 2054 so far, and we expect 2084 sometime soon.
He wrote a piece for The Free Press that I just loved about dressing well.
(1) How to Dress Like a Gentleman—And Why - by Elliot Ackerman
Amazon.com: Elliot Ackerman: books, biography, latest update