Correct

反空降

/ fǎn kōngjiàng / 
Strokes

Definition

anti-aircraft defense

Example

As a Noun

anti-airborne defence

1
Fǎn
反
kōngjiàng
空降
xùnliàn
训练

anti-airborne training

2
Fǎn
反
kōngjiàng
空降
bùduì
部队

anti-airborne defence troops