Military style jumpers (5)

I believe the answer is:
paras
But I can't explain it at all! Could you help me understand?
(Another definition for paras that I've seen is " Members of a parachute regiment, in short".)

I believe the answer is:
paras
But I can't explain it at all! Could you help me understand?
(Another definition for paras that I've seen is " Members of a parachute regiment, in short".)