Lt. Gen. HR McMaster is the new National Security Adviser. He commanded M1 Abrams and M2 Bradleys at the Battle of 73 Easting which was featured on THE GREATEST TANK BATTLES episode.
He got his PhD at the University of North Carolina, my oldest brother's alma mater, and a few miles from my hometown.
Video link: www.youtube.com/watch?v=4ziEMlarjiU