How many of the howevermany billions are going into the US economy? Well, there's the CEO's salary, and of course, the kickbacks....and, yes, the money "donated" to the PACs.
And a whole shitload of money going into Iraq, which'll help Iraq's economy (assuming, of course, that Iraq has an economy after we destroy the shit out of whatever infrastructure is left there; in the interim, I suppose that all those bucks are drawing decent interest so as to pay nice dividends to the CEO, et al).