There was (an exchange of) 'gunfire' between the gangs. [=they shot guns at each other]
We heard 'gunfire' in the distance.
(..) I want to borrow it. For spelunking. Spelunking? Yeah, you know, cave diving? You expecting to run into much gunfire in these caves? Look, I'd rather Mr. Earle didn't know about me borrowing... Mr. Wayne... ...the way I see it... ...all this stuff is yours anyway. (..)2005 Batman Begins