On the Weekly Briefing podcast: In 1967, three NASA astronauts were testing in preparation for the launch of Apollo 1. As they sat on the launch pad, a fire was sparked in their command module. None of them survived, despite some extraordinary efforts of those outside on the launch pad. Among them, there is one man still living, and he recently related, for the very first time, his experiences of that tragic day. Our guest this week is Matthew Beddingfield, grandson of James Gleaves, who helped try to save the Apollo 1 astronauts all those years ago.