Thanks for that link Eric. That is exactly the type of info I was looking for.
I certainly have some work to do on COL, but I am already putting back a lot of money in other areas (rental property, taxable accounts, etc.) We have a lot of home equity and various other investments. If everything was liquidated then we would be sitting on about $500k or thereabouts. (Frankly, neither me or my spouse want to stop working at what we are doing at the moment, but at the same time I know I won't enjoy it for the next 20+ years either.)
Basically, I am nowhere near as bad ass as most of the people on this board, but we have been pretty good about saving even when I was still in grad school.