Active-duty military are considered to live in their state HOR no matter where they are stationed. Their active-duty pay is considered to be earned in their state HOR.
When you complete the Personal Interview:
Select OR as your state of residence;
Answer "No" to "(Name) lived in another state in 2017?"
Answer "No" when asked "Did you earn money in another state?" unless you had a non-military job in the state where you are stationed.