Section 44.552 - Method of subpoenaing law enforcement personnel; subpoena to reflect whether expert opinion to be asked(1) Whenever a police officer or an employee of the Department of State Police is called as an expert witness in a civil case by a party by whom the officer or employee is not employed, a subpoena requiring attendance may be served by delivering a copy either to the officer or employee personally or to the officer's or employee's immediate superior.(2)(a) A person causing a subpoena to be issued to compel the attendance of a police officer or an employee of the Department of State Police before a tribunal shall indicate on the face of the subpoena whether the person or the person's representative intends to ask the expert opinion of the officer or employee as to any aspect of the proceedings.(b) A police officer or an employee of the Department of State Police may not be required by a tribunal to give the officer's or employee's expert opinion on any matter before the tribunal unless the subpoena compelling the officer's or employee's presence indicates that the officer's or employee's expert opinion will be asked. 1991 c.550 §2; 2011 c. 547, § 22