Mo. Rev. Stat. § 192.510

The department of health and senior services shall respond to all radiation emergencies. The department shall coordinate its radiation emergency response activities and plans with the state emergency management agency, the department of natural resources and other agencies, and provide a memorandum of agreement documenting responsibilities. This section does not in any way alter or change the provisions of chapter 44 concerning response during an emergency by the office of the adjutant general or its successor agency.