Firefighters in Lynn supported the national strike over pensions on Wednesday.
Scores of officers formed a picket line outside the Kilhams Way station.
Secretary of the Norfolk branch of the Fire Brigade Union Kevin Game was pleased with the response.
He said: “I can’t describe how good the strength and solidarity was good.”
Three incidents were reported during the four-hour strike.
Chief fire officer Nigel Williams said: “We have had a contingency plan in place which we have been working very hard on to ensure that cover was maintained during these difficult circumstances.”