Glasgow Testimony ordinance (§ 200.150)

Officers shall appear in court on any case in which they are witnesses. If duty demands their absence from the Municipal Court, they shall report the matter to the Police Chief in order that the case may be continued. Officers on the witness stand, in response to questions asked, will state in clear and distinct words, truthfully, all they know regarding a matter, without fear or reservation and without any desire or design to influence the result.