Determination, maximum effort are trademarks of Imahara’s incredible life, career By BRUCE BROWN, Written for the LSWA Never look back. That's not where you're going. If anyone had a reason to look back and wonder why things were as they appeared, Walter Imahara might have had a reason. Imahara is a Japanese American citizen, born on Valentine's Day, 1937, in Sacramento, Calif. …