I was PCS'd (Mil move) to Osan Air Base, South Korea on 03 MAY 2017, do i need to click "yes" or "no" for "did you maintain a permanent place to live outside of Missouri?

[PatriciaV]

As active military, your post is not a permanent address. From a tax standpoint, your State of Legal Residency (SLR) is considered your “domicile” or “resident” state as long as you are on active duty. Even if you are stationed in another state or country, you’re still considered a resident of your SLR.

For this reason, you would answer "no" to the question about maintaining a permanent place to live outside the state.