Question: In which city can you find the headquarters of the Missouri National Guard, whose Commander in Chief is politician, author and former Navy SEAL Eric Greitens?
Sentence (from "Eric Greitens"): Eric Robert Greitens (born April 10, 1974) is an American politician, author, and former Navy SEAL currently serving as the 56th Governor of Missouri, since January 2017.
Relevant evidence: Yes