seoul south hangook set hold first nationwide strain defence mandrillus leucophaeus six years wednesday amid compass north korea ontogeny nuclear missile threats pedestrians required withdraw shelter drivers asked pull areas drills key element yearly ulchi polite defence exercises held alongside ulchi freedom shield drills south korean us troops began monday improve responses north korean flack contingency pm siren speech sound calling people get streets minutes snappy eased consort interior safety ministry pedestrians must go straight designated shelter nearby underground space drivers areas nationwide must pull side road people intimately supermarkets movie field of operations public installation guided evacuate medical institutions public transportation operate normally community centres near apartment complexes seoul announced planned practice loudspeakers tues asking residents follow instructions aired radio drills meant effectively respond factual air foray into surprised delight find nearby protection announcement said part bordering north korea residents look face additional scenarios including chemic biological radiological training wearing gas mask apply emergency food rations ministry said ulchi civil defence exercises launched inflame raid northwards korean commandos presidential compound seoul protection installed across country million air demurrer training taken place since late may seoul came fire issued false air raid dismay evacuation warning following north korea failed satellite launch even though capital far rocket trajectory triggering panic among residents