That's a good question... but where are all the 50-60 year old firemen? Electrical engineering paid pretty good back in the day... so I can assume that if they managed their money wisely, they are sitting on a boat on some lake in Wisconsin.
I'm working on a hardware project right now and the guy that's doing the board design is 57 and retired. I can only call him between tuesday and thursday and he has an aol.com email address, but he knows what he's doing... so who knows...