JD Vance Booed by Firefighters at Union Event NewsweekJD Vance booed while speaking at firefighters convention in Boston; Harris and Walz finish taping sit-down interview The Boston GlobeJD Vance reacts to being booed at firefighters’ union convention CNNGov. Tim Walz Speaks at Firefighters Union Conference in Boston C-SPAN JD Vance booed by firefighter union audience after Walz’s appeal to same group Axios