It's unclear if the SAGE system would have actually been effective in tracking incoming bombers, which presumably would have employed radar jammers and other countermeasures. Fortunately, we never found out.
The huge rotating antenna (not shown) was removed shortly after the site's decommissioning in 1980, but the building, a prominent local landmark visible from downtown San Jose, has been preserved.
@mattblaze I listened to an interview between #GradyBooch and Gergely Orosz, (that was pretty interesting) and Grady argues that SAGE was effectively the first of three golden ages of software engineering. An astounding amount of engineers and infrastructure was devoted to it.
Of course, Grady had thoughts on #AI.