President-elect Donald Trump sent this tweet early this morning about General James “Mad Dog” Mattis… "General James "Mad Dog" Mattis, who is being considered for Secretary of Defense, was very impressive yesterday. A true General's General!" — Donald J. Trump (@realDonaldTrump) November 20, 2016 Could be because Ret. 4-Star Army Gen. Jack Keane was asked to serve as SecDef, but turned the gig down. From NPR: President-elect Donald Trump asked him to serve as secretary of defense, retired four-star Army Gen. Jack Keane tells NPR’s Rachel Martin — but Keane declined the offer, citing personal reasons. Keane says he recommended...