Labor unions August 29, 2024 4:03 pm JD Vance receives cheers, boos during speech to fire fighters union Republican vice presidential candidate JD Vance received a mixture of cheers and boos while speaking at the International Association of Fire Fighters Convention on Thursday. US & World Videos 1:29 Plenty of firsts no matter who wins the presidential election 1:49 Postmaster General: ‘The Postal Service is ready to deliver the nation's mail-in ballots' 0:56 Taylor Swift endorses Kamala Harris for president 2:59 Trump, Harris propose different visions for America during presidential debate 2:56 Harris challenges Trump over Ukraine: Putin ‘would eat you for lunch'