機器
accident
air
aircraft
airplane
attack
attacks
aviation
aviation accident
blackmail
burning
concept
crash
crisis
damage
danger
dangerous
depression
destruction
disaster
emergency
engine
explode
fear
fire
flight
flight recorder
frustration
hostages
idea
investigation
jet
metaphor
panic
phobia
plane
plane crash
ransom
sky
smoke
stress
technology
terrorism
threat
tourism
tourist
travel
ultimatum