The same interviewees turn up in "Breaching the Truth," a solid, 10-minute making-of featurette. Some of it is fluff, with the actors singing each others’ praises, but there’s good information here too. Best of all is the opportunity to see how exacting the crew was in recreating the specific locations where the actual events took place.
Finally, there is a whole slew of deleted and alternate scenes, each with commentary explaining why they were cut or changed. A lot of these are very good scenes, some of which would have added to the film, but overall their reasons for cutting are sound. The best one has Hanssen calling O’Neill while O’Neill is searching his office and berating him for not answering the phone correctly. It generates suspense and comedy (of the boss-from-Hell variety), but Ray felt it was hitting redundant beats. Some of the cut material involving Cooper and Cole would have emphasized that Hanssen was actually good at his job, even if he was condescending and, um, a traitor. One scene goes into more detail about Hanssen’s membership in Opus Dei, and several focus on O’Neill’s wife, Julianna. It’s too bad these were cut because Caroline Dhavernas is wonderful and could have used more screentime. Dhavernas also features prominently in the longest alternate scene, which was completely rewritten in the course of filming and re-shot during pick-ups months later. Usually I find alternate takes a waste of time, but this particular one is a very interesting inclusion as Ray explains why he changed it, and the (sometimes subtle) changes bear him out.