sentences:  In August 2009, he was hired as the Texas Department of Public Safety's Assistant Director for Intelligence and Counter-Terrorism but left after two months to pursue his writing and speaking career.Burton regularly briefs corporate executive teams on security related issues and speaks at a variety of both public and private events, including the Southern Law Network's 18th Annual General Counsel Event On Oct. 12, 2017, he moderated a panel at the Fourth Annual Texas National Security Forum at The University of Texas at Austin with former acting Director of Central Intelligence John McLaughlin, former Acting Director of the Defense Intelligence Agency David Shedd, former Assistant Secretary of the Treasury for Intelligence and Analysis Leslie Ireland and former Under Secretary of Defense Marcel Lettre.Burton is the author of a memoir, "Ghost