機器
advanced tactical fighter
aggression
air force
air to air combat
air vehicle
aircraft carrier
airplane
armed forces
army
aspirations
battle
biplane
blimp
bomb
bomber plane
bombing
cartoon
conflict
defending
fighter plane
fighterbombers
flying
gun
military
military air vehicle
military airplane
military invasion
military target
missile
mode of transport
monoplanes
navy
people traveling
pilot
piloting
protection
protective workwear
raf
sky
speed
target acquisition
transportation
travel
us military
usa
war
weapon
world war i
world war ii