A security personnel officer stands guard at the site of a bomb attack in Thailand's southern Yala province March 6, 2012. Two soldiers guarding teachers were severely wounded in the roadside bombing in Yala's Krong Penang district on Tuesday morning, said Police Colonel Samniang Luechiangkam, the chief of Krong Penang police station, and a local newspaper reported. REUTERS/Surapan Boonthanom (THAILAND - Tags: CIVIL UNREST CRIME LAW MILITARY)