Such missiles' appearance provoked a riot (3-2-3)
I believe the answer is:
air-to-air
'such missiles' appearance provoked a riot' is the definition.
I can't judge whether this defines the answer.
'appearance provoked a riot' is the wordplay.
'appearance' becomes 'air' (both can mean an impression or character).
'provoked' indicates anagramming the letters.
'a'+'riot'='ariot'
'ariot' anagrammed gives 'toair'.
'air'+'toair'='AIR-TO-AIR'
Can you help me to learn more?
(Another definition for air-to-air that I've seen is " Like some missiles".)