Yeah, a real bummer... but I totally respect your reason for having to back out, Mike!
Nick - if you have time on Saturday and you're willing to drive in twice this weekend (once for the practice run, again for the actual event on Sunday), I'll be happy to do a practice run with you of the whole thing.
I can always lead if need be, but I really would prefer that an actual military vet (whether active or retired) leads. It just seems much more appropriate, as I have never served in the military. Working for a defense contractor really doesn't count.