Filmmakers say access to security‑cleared sources was limited

Audience members asked whether the filmmakers had been able to interview high‑level officials or security‑cleared personnel. Presenter S2 said they did have conversations with at least one person "who has a security
clearance," but added that many discussions happened elsewhere: "we had long conversations with someone that
began once the camera stopped rolling."

The team described a pattern common to reporting around sensitive facilities: sources willing to speak off camera but reluctant to appear on record. They said this limited the range of on-camera technical testimony and made archival sources and local oral histories more central to the films' narratives.