However, that order would depend on continuous C-17A production surviving through 2015.
Boeing is on contract now to deliver 190 C-17As through 2009, and will likely receive funds in October to deliver 15 more in 2010.
That leaves a 5-year gap from 2011-2015: the gap that must be filled.
Boeing forecasts a foreign market for 12-15 C-17As over the next 5 years.
That leaves the USAF facing a potential bill to buy 48 - 60 more C-17As, depending on annual production rates, to avoid the C-17B-killing gap.