 FAIR: The two brothers and the other convicts are all going for the  D.B. Coopers five million, which was stolen several decades ago.  There are design changes in the US Dollar bills so how are they  going to use the buried five million? While there have been several  design changes to US currency, this does not mean the money cannot  be used. It is still considered legal tender. However, money taken  in the D.B. Cooper heist just showing up all of a sudden in  circulation would be a little eye