U.S. F/A-18 fighter jets take off for mission in Iraq from the flight deck of the U.S. Navy aircraft carrier USS George H.W. Bush, in the Persian Gulf, Monday, Aug. 11, 2014.

LISTEN: Pentagon Estimates Cost Of Fighting ISIS Up To $10 Million Per Day

“The Pentagon’s $7-10 million per day is really an estimate of operation costs, not the replacement of the munitions themselves, and I think it’s probably a low estimate. There are a lot of expenditures that the Pentagon is not calculating in its estimate.”