Why did James Cameron make the Colonel's powersuit number "11"? Is that a reference to 9/11/01?

I've been seeing the number eleven in the media and elsewhere a lot! E.g., A Walmart commercial shows isle 11's light coming on first, and all the RNC surveys and membership renewal forms I've been ignoring (because I switched to the DNC in protest of preemptive wars, warmongers, unregulated capitalism, and evil plutarchs) ask for a minimum of "$11", I assume as a subliminal way of soliciting my patriotic support. I thought maybe I was seeing eleven everywhere just because I'm thinking about, but James Cameron has to have a reason for making the Colonel's powersuit number eleven. I've gotta know why?