9 months ago, a very large scale live military simulation was done in whole SouthWest of USA.
Texas politicians took this actually against them, even they would be with the federal government if there were actually a people revolt Russian style...
I think the Obama administration used Texas as a false target, which surely felt honored, to hide this federal apprehension
A Boston company pc games made a free boardgame using this Texas fun:
EDIT: the game is at itchio now.
https://subalterngames.itch.io/jade-helm-15