The president of natural gas firm Sequent Energy Management, was hanging out on Bourbon Street in New Orleans with coworkers around 2 a.m. last Friday morning. He hasn't been seen since. Schantz, who lives in Houston, went to New Orleans last week to present a donation from his company to Tulane University and to visit his daughter, a student there. He and his colleagues went out on Bourbon Street Thursday night. According to news reports, he was last seen at Club Razzoo at two o'clock in the morning. Now his company and his family are looking for him, along with...