ST. LOUIS, Mo. -- Dec. 4, 2014 – In the shadows of a city trying to return to normal, Arizona enhanced non-lethal [ENL] device manufacturer, Guardian 8 Corporation, conducted an instructor certification course in an effort to educate the security industry on the latest technology being used in the protection of emergency rooms, universities and corporate campuses across the country. Guardian 8 Corporation is a wholly owned subsidiary of Guardian 8 Holdings (OTCQB: GRDH).