If a national or local emergency or other situation arises which makes substantial compliance with the provisions of state or federal law relating to the methods of voting for overseas voters impossible or unreasonable, such as an armed conflict involving United States Armed Forces or mobilization of those forces, including state National Guard and reserve components, the Elections Canvassing Commission may adopt by emergency rules such special procedures or requirements necessary to facilitate absentee voting by those persons directly affected who are otherwise eligible to vote in the election.