"The clarified policy on COVID vaccinations for Oklahoma Army and Air National Guardsmen reflects the governor's ability to assert his command authority over the men and women of the Oklahoma National Guard while they are within the state's borders," said Lt. Col. Geoff Legler, a spokesman for the guard.
https://www.oklahoman.com/story/news/2021/11/12/newly-oklahoma-national-guard-leader-changes-covid-vaccine-policy/8586292002/