It also has to do with ...trying to remember acronym...PEADs??? I know Wictor had info about that, and he got it someplace else, and old unrolled twtter thread. Directives that are not made public about continuity of government type stuff.
Presidential Emergency Action Documents (PEADs) are executive orders, proclamations, and messages to Congress that are prepared in anticipation of a range of emergency scenarios, so that they are ready to sign and put into effect the moment one of those scenarios comes to pass.