Emergency services are supposed to be for everyone in your country. Now its easy to narrow down just to citizens or residents but the US will have at all times

Emergency services are supposed to be for everyone in your country. Now its easy to narrow down just to citizens or residents but the US will have at all times a large quantity of visitors who are not expected to speak english I would suppose. If you get an emergency alert or message related to safety of a particular area it is in the best interest of society in general for that message to be understood by everyone in that area.