They called him Bobby then, not Robert, and he was never part of David Kurrasch's clique growing up.
The boys grew up less than a mile apart in a quiet neighborhood in Santa Ana, and they saw each other often; Kurrasch's best friend, Eric Christensen, was Bobby's younger brother. But while the three of them hung out under the same roof, their paths rarely crossed.
Eric and David played with G.I. Joe figures. Bobby didn't join in.
Eric and David walked or drove themselves to school. Bobby was bused to a special school miles away.
Eric and David were the same age. Bobby was five years older.
"He wasn't my close friend, but I knew him well," Kurrasch said. "I would always chat with him when I went over there."
Four decades later, Kurrasch and Bobby — who now prefers Robert Christensen to his childhood nickname — have a closer bond, one that goes beyond simple friendship.