Are the CC-177s worth it?

David Akin, at his blog, wonders about the need for the Canadian Air Force's Globemaster IIIs. A dialogue ensues at the "Comments".

Babbling adds in an e-mail to me:

I'd also mention the idea that rentals continue to be a good idea to supplement our strat-lift capacity. But they're not a good idea to actually be the entire capacity! Especially since military aircraft piloted by your own nation's crews can and will take on missions you wouldn't trust to a civilian contractor.

Does anyone think the JSS will obviate the need for civilian sea-lift?

I think your strongest point is the overuse of the C-130's as miniature strat-lifters, and the restrictions that placed upon our other capabilities. For example, the decision to go with the LAV & MGS (Stryker) platforms rather than a tracked direct fire armoured heavy (Leo) was driven to some degree by what we could carry in the back of our largest transport aircraft, the Herc. Logistic purchases aren't quite as clear-cut in terms of what saves lives, enables missions, or extends capabilities...

I would also add that we have not spent $3.4 billion on the aircraft, as the title of Mr Akin's post might make one think. That's the (very) long-term cost of buying and keeping them in service for many years, not the flyaway price.