August and October to start

From Globesmasher posting at Army.ca:

Our first aircraft was supposed to be delivered in Mar/Apr 2007, but after negotiations last summer we slipped them back to June 2007. There is a delay for the LAIRCM fitting from Northrup Grumman. Our first tail was for P-174 in June 2007. Of course we lost that when negotiations fell through in Dec 06 and then just recently throughout Jan 07. Someone else will get that aircraft.

The earliest tail that we can now expect ... in between the RAAF and the USAF deliveries ... is now P-177 in August. We will then step back onto our original delivery schedule with P-180 in October 07 as the second aircraft.

Strangely enough we had originally been allowed to cut in-front of the USAF for P-174 ... they have been very gracious and accommodating towards us.

He's put up some fantastic info on how the Air Force might be planning to use the C-17's (scroll down), and also some of the things he's done while flying on them - I expect on exchange with the USAF.