He dressed like a management worker earning good money. Suit and tie, hair carefully styled—these seem like small details, but they make an impression. I discovered this myself, inadvertently. In a short time as a programmer at GTE California—a major telephone company no longer in existence—I discovered that if I came in one day without a badge, neatly dressed but casual—say, sports shirt, chinos, and Dockers—I'd be stopped and questioned. Where's your badge, who are you, where do you work? Another day I'd arrive, still without a badge but in a suit and tie, looking very corporate. I'd use a variation of the age-old piggy-backing technique, blending in with a crowd of people as they walk into a building or a secure entrance. I would latch onto some people as they approached the main entrance, and walk in chatting with the crowd as if I was one of them. I walked past, and even if the guards noticed I was badgeless, they wouldn't bother me because I looked like management and I was with people who were wearing badges.