Again, the modelling was done taking into consideration the logistics imperative. In the geopolitical environment, and taking a look from an intelligence perspective or the realities of our world, where do a lot of natural disasters occur and where are politically very challenging parts of the world? Again, you can't do “what ifs” for an infinite number of options. What you want to do is be able to have an approach that allows you to respond to the majority of what you potentially will be engaged in.
On November 17th, 2011. See this statement in context.