Dear kat,Unfortunately, Daddy died at the grand old age of 81 last year without ever revealing the 'secret of Los Alamos.' I'll tell you this though; he was a stubborn, red headed Irish ex-cop and ex-fighter, who couldn't tell a lie. He could exagerate (of course), but he always had a little grin on his face when he did. He NEVER had that grin on when he told this story . . .