Handouts. Military-industrial-parasite spending has increased massively since 2001 without tax increases to support it. Problem is that the handouts are not going to the average American, but being pocketed by defense contractor companies who are sitting on quite a lot of money. And/or being squandered in the Middle East.
If you’re going to run a war, you need to raise taxes to support it, end of story. Dubya, bright boy that he was, didn’t get this idea through his numb skull.