In Tijuana, a once-thriving city just across the border from San Diego, the increasingly deadly drug war has touched almost every part of life.
Americans used to flock to the city, but now largely avoid it. In 2005, a banner year for tourism, some four million people visited Tijuana. Last year, the number dropped to around 400,000. Residents, too, are fleeing in fear.
Worldfocus correspondent John Larson, producer Bryan Myers and field producers Megan Thompson and Ivette Feliciano explore Tijuana, beginning in a hospital that not only treats the victims of drug violence, but that operates in fear that its own people will get caught in the battle.