 Complete the following phrase:  In September 1940 29 Squadron began to convert to the Bristol Beaufighter, a rugged and heavily armed twin-engine aircraft equipped with airborne interception radar in the shape of AI Mk. IV radar sets, just as the Luftwaffe began its campaign against British industrial citiesknown as The Blitz. By 29 November Squadron had become an all-Beaufighter unit. Braham was among the first to fly the Beaufighter and did so in September. He would, however, spend nearly the entire month hospitalised after a serious car accident. He flew his first wartime operation in a Beaufighter on 17 November 1940. Squadron Leader Guy Gibson, later famous for his role in 