Mo. Rev. Stat. § 9.132

September eleventh of every year shall be known and designated as "Emergency Personnel Appreciation Day". It shall be set apart as a day of acknowledging, with special gratitude and profound respect, all emergency personnel, including police, firefighters, ambulance personnel, and emergency dispatchers. All citizens of this state are requested to devote some portion of emergency personnel appreciation day to recognition and solemn contemplation of the sacrifices undertaken by emergency personnel in performance of their duties.