I don’t understand these numbers.
The entire defense budget for 2015 was about $600 million.
https://en.m.wikipedia.org/wiki/United_States_federal_budget
Exactly. This is sensationalist nonsense.
Here's a possible explanation, far down in the article:
At first glance adjustments totaling trillions may seem impossible. The amounts dwarf the Defense Departments entire budget. Making changes to one account also require making changes to multiple levels of sub-accounts, however. That created a domino effect where, essentially, falsifications kept falling down the line. In many instances this daisy-chain was repeated multiple times for the same accounting item.