What counts as the "national security state"? Because as far as I recall the military is popular, the FBI was a trusted institution up to 2016 and getting a bit partisan since then. PATRIOT Act was passed in an environment of roaring support for the Bush administration over the screams of anyone who cared about basic rights and process. You don't have to go far to find people who support US intervention in Ukraine.

The US security state, in all its facets, has a lot of popular support. By people who I think are a bit foolish, but nevertheless. (although I'll sneak in that the karmic justice of watching the mechanisms of the War on Terror get turned on Republican voters has been sad but satisfying)