One requires a tax increase while the other does not. However, the $1.8b, plus the interest on that, plus the $1.2b in payments to the contractor, Ferrovial are to be paid out of profits on the new project. My question is, what happens if DIA can't cover that out of revenue? Does that then fall on the City and County of Denver to over any difference?  As I stated on another post, I'm not a lawyer but it seems like there is at least some financial risk to tax payers in this plan.