Amid inspirational talk, chanted mantras and shouts of victory at a late-night firewalking event attended by thousands Thursday came agonized shrieks from followers whose soles were scorched by the superheated coals, witnesses said. At least 21 people were treated for burn injuries after taking part in the crowning event of the first day of a Tony Robbins function downtown, including at least three who went to the hospital, a San Jose fire captain said. The people who suffered various second- and third-degree burn injuries were among more than 6,000 who attended the motivational speaker's event at the San Jose Convention...