The compartmentalized activities are budgeted by Congress, a few members of which are read into the activities for oversight purposes. They are not funded by embezzlement from other programs. That would be a disclosure vulnerability. Ever heard of the big cross-charging scandal between the B-1 and Space Shuttle program back in the 1980s? That gave rise to onerous accounting reporting requirements.

You can imagine all you want, but I've been there. You haven't.