My tally was a quick-and-dirty one and I know I missed a few, but I was also guided by the axiom if it's not onscreen or referenced onscreen then it doesn't really count. In WNMHGB we have no idea who else died besides Kelso, Mitchell and Dehner. And technically there were no redshirts, but that's playing with semantics. Somehow I doubt all of those nine who died out of sight were all Security personnel. At best maybe it could be a third and as such wouldn't affect the overall average and total much at all.