DALLAS--(BUSINESS WIRE)--Over 200 Houston Independent School District (HISD) police officers will patrol Texas’ largest school district wearing WatchGuard Video’s VISTA™ HD body-worn camera. Under the direction of HISD Police Chief Robert Mock, HISD began a four-month pilot program in February 2015 to test and evaluate the effectiveness of body-worn cameras on 25 of the school district’s police officers. When the pilot program launched, Chief Mock noted on HISD’s blog and in the press conferenc