>> i can't understand what microsoft 121119 5pm_aab you're saying. >> reporter: too disabled to explain he needed help. >> somebody's dying? >> reporter: someone was dead. >> kevin was a suspect that we needed to find out the validity of his statements, whether he had gunshot residue on his hands, whether he was even able to shoot a gun, given his physical disabilities. >> reporter: but a suspect? they checked his hands for gun powder residue. negative. >> you have to look at everybody, unfortunately. sometimes hurt feelings, but you have to get down to the facts, too. >> reporter: but facts c...