Interoperability, in terms of how we worked with our allied nations...I wouldn't tell you there was a lot of difference between 2007 and 2009 because it was pretty seamless. The Role 3, the whole time I was there, was a Canadian-commanded, Canadian-dominated operation, so maybe that helped.
In terms of evacuations from the FOB, that was always run by the Americans on their choppers, with their medics, or almost exclusively their medics. These are people, medically, we were very close to already.
I spent a few days at Kandahar, and even there, working with a British neurosurgeon and a Danish anesthetist, it went pretty smoothly, again because trauma work is not rocket science: “There's a hole here. There's a hole there. There is damage in between. You know what to fix.” There is not a whole lot of room for intellectual argument, as there might be over cancer or diabetes.
It was pretty smooth, and we didn't have any trouble with our allies.