This was reported on in 2015 but in reality, I think most of it went missing the day before 9/11. [Right out of Rummy's gob on 9/10]
https://youtu.be/xU4GdHLUHwU?t=12s
[2015] http://www.mintpressnews.com/cooking-books-dod-hud-defrauded-taxpayers-of-21-trillion-from-1998-to-2015/232905/