Guatemala declares State of Emergency. Big clampdown after armed attacks kill at least 5. Armed men attack a military post and a police station. The armed men also cut off roads and hijacked buses. Gang attempting to force security forces to withdraw. Guatemala President Arevalo vows to rebuild security. The State of Emergency will last 15 days in 2 municipalities. Guatemala President shows videos from December 13. Armed men seen shooting and taking cover near key road. Military uniforms, bullet