Indonesia beefs up its tsunami preparedness with new early warning system

Indonesia is developing a new offshore tsunami early warning system, using GPS to monitor sea level changes. The country's National Disaster Mitigation Agency says the dynamic system could be implemented in the next five years. Saifulbahri Ismail looks at the critical role of such a disaster warning system, in the second part of CNA's series, commemorating 20 years after the Indian Ocean tsunami.