Old Soldiers is the tenth episode of the sixth season. It was released on 4 December 2009.
When the team foils a robbery of an armored car full of Federal Reserve money and recover bills that trace back to the infamous D.B. Cooper heist, they call on Agent Roger Bloom, who worked on the Cooper case, for help with the investigation.
This is one of the few episodes that tackles head-on the difference in mentality between Don and the other two Eppes men, although all three seem to end with an acceptance by each of the right of the others to hold the views they have. Alan and Roger Bloom, having lived through the sixties, are in many ways representative of the differing perspectives, and they also arrive at a détente.