Although at the moment the US still leads the world in defense spending, the US economy is no longer able to support the entire technology pyramid even in a time of relative peace and prosperity...
Authored by Dmitry Orlov via Club Orlov blog,
Within the vast bureaucratic sprawl of the Pentagon there is a
group in charge of monitoring the general state of the
military-industrial complex and its continued ability to fulfill the
requirements of the national defense strategy. Office for
acquisition and sustainment and office for industrial policy spends some
$100,000 a year producing an Annual Report to Congress.
It is available to the general public. It is even available to the general public in Russia, and Russian experts had a really good time poring over it.

In fact, it filled them with optimism.
You see, Russia wants
peace but the US seems to want war and keeps making threatening gestures
against a longish list of countries that refuse to do its bidding or
simply don’t share its “universal values.” But now it turns out
that threats (and the increasingly toothless economic sanctions) are
pretty much all that the US is still capable of dishing out—this in
spite of absolutely astronomical levels of defense spending.
...................................................................................................................................