the Directive 51 is a presidential arrangement from 2007, that promises an assurance of specific rights in a catastrophic emergency. It was written and signed by the president of the United States of America George W. Bush on 4 May 2007.
This emergency describes a location independent incident, that threatens the American people, infrastructure, environment, economy, or political functions.
In such a case, a unit like the Strategic Homeland Division would be activated. In addition to the Directive 51, the developers of Tom Clancy’s The Division also oriented towardOperation Dark Winter.
https://division.zone/directive-51/