> This does not include many military-related items that are outside of the Defense Department budget, such as nuclear weapons research, maintenance, cleanup, and production, which are in the Atomic Energy Defense Activities section,[90] Veterans Affairs, the Treasury Department's payments in pensions to military retirees and widows and their families, interest on debt incurred in past wars, or State Department financing of foreign arms sales and militarily-related development assistance. Neither does it include defense spending that is domestic rather than international in nature, such as the Department of Homeland Security, counter-terrorism spending by the Federal Bureau of Investigation, and intelligence-gathering spending by NSA, although these programs contain certain weapons, military and security components.

> Accounting for non DoD military-related expenditure gives a total budget in excess of $1.4 trillion.[91]

The Pentagon frequently "loses" $1T here and there and then says, "oopsie!" with no actual consequences. That looks like a dark budget to me once you factor out typical government waste and overredundancy.

https://responsiblestatecraft.org/pentagon-audit-2666415734/