air-to-air

air–to–air

adjective \ˌer-tə-ˈ(w)er\

: shot from one flying airplane at another

Full Definition of AIR-TO-AIR

:  launched from one airplane in flight at another <air–to–air missiles>; also :  involving aircraft in flight <air–to–air combat>

One goose, two geese. One moose,
two... moose. What's up with that? »

First Known Use of AIR-TO-AIR

1939