(See Cover)
Just after dawn, the lights which flooded the white marble building on Constitution Avenue flicked off. A few minutes later the armed sentries patrolling the terraced grounds were relieved. By the time the first visitors began arriving, there was little but its name to distinguish the building from scores of other Government offices. Above the entrance were the words: "United States Public Health Service."
But inside the difference was immediately noticeable. Admonitory signs were everywhere. "Have you locked your safe?" Guards checked each visitor's name against a calling list, escorted him...