air
aircraft
airplane
aluminum
american
armed
black
blade propeller
blue
c 47
camouflaged
cargo
combustion
conflict
cooling
dakota
dc 3
defence
defending
defense
douglas
engine
flight
fly
force
fuel
historical
history
inside
large
low
mechanism
metal
oil
orderly
overhead
plane
propeller
protection
royal
shiny
system
three axis
transport
twin
two
war
world
wwii