From Washington Straight

For the better part of two years Secretary of Defense Robert McNamara has held Congress enthralled. Would-be critics faltered when faced by the cool executive who had, at fingertip, the answer to almost any question about his Department. His skill when called to testify before congressional committees became legendary. As a result, senators and congressmen alike watched helplessly while McNamara helped shepherd through far-reaching changes in the nation’s defense policies.

Cato