Travelers bound for Corpus Christi were detained in Houston for hours Friday after a passenger found a note claiming there was a bomb onboard their Southwest Airlines flight. The passenger alerted the crew about the note, prompting the plane to land at an isolated part of Hobby Airport, authorities said. No one was injured, and bomb-sniffing dogs found no evidence of explosives on the plane, said Andrea McCauley, spokeswoman with the Transportation Security Administration. That was good news for Belia Segura of Harlingen, who was waiting anxiously for the arrival of her granddaughter Elizabeth Rodriguez, 16, at Corpus Christi International...