That said, the cover system so crucial to third-person shootouts remains unreliable in the heat of an intense firefight.
The Sun
Down in the street an intense firefight was under way.
Times, Sunday Times
For four hours there was an intense firefight.
Times, Sunday Times
It took several hours and an intense firefight before elite commandos regained control.
Times, Sunday Times
It was the most intense firefight.
The Sun