Me. Rev. Stat. tit. 20-A, § 10010

If a current member of the United States Armed Forces or a veteran of the United States Armed Forces who has been honorably discharged is enrolled in a program of education at any campus of the University of Maine System, the Maine Community College System or the Maine Maritime Academy, that member or veteran is eligible for in-state tuition rates, regardless of the member's or veteran's state of residence.