Notwithstanding any other provision of law, any person licensed or certified to practice a trade or profession by the state of Missouri or any branch or agency thereof which requires an annual period of continuing education or training as a condition of continued or renewed licensing or certification, and who is or becomes a member of the National Guard or of any reserve component of the Armed Forces of the United States who is called to full-time active duty in the service of the United States under competent orders shall, during the period of full-time active duty, be exempted from any such requirement for continuing education or training without his status, license, certification or right to practice his trade or profession being affected and shall not be required, upon returning from full-time active duty, to make up or retake any training or education for which he was exempt under the provisions of this section.