Above: a busy Philadelphia International Airport The shooting of Donald Trump while at a Pennsylvania rally at 6.11pm ET on Saturday, highlighted how radio can, but often can’t, cover breaking news. Helped by a correspondent who was at the event who had been on-air minutes earlier, the BBC World Service carried the news just three minutes later at 6.14pm, with a professional, short and clear report (albeit with scant details). Interviews with correspondents about Donald Trump were running w...