Jurors at the federal courthouse watched a closed-circuit TV signal of the testimony, with extraordinary security measures in place to prevent electronic interceptions.
The rooms are designed like upgraded 1950s bomb shelters, with air filters to screen out biological agents, dedicated phone lines, bathrooms and closed-circuit TV systems.
"We risk getting caught in the cyclical trap so common in our industry, " he tells them, his words amplified via closed-circuit TV to employees around the world.