AN EXPERT WHO SPECIALIZES IN USE OF FORCE AND POLICE TACTICS IS EXPECTED TO CONTINUE TESTIMONY TUESDAY IN THE TRIAL OF TWO FORMER APD OFFICERS. KEITH SANDY AND DOMINIQUE PEREZ ARE CHARGED WITH SECOND DEGREE MURDER AND LESSER CRIMES IN THE DEATH OF JAMES BOYD IN 2014. JEFF NOBLE’S CREDIBILITY WAS INITIALLY QUESTIONED…… MORE