New 'Canberra' Has Dual Role -- Shown here is the new version of the English Electric Canberra jet bomber the Mark B.8, first flight of which is announced to-day (Saturday). The new Canberra can be used as a high altitude bomber-the role in which it is shown here-or, fitted with armament, for long-range night ***** duties involving attack on communication and other ground targets. The armament is controlled by the pilot who has a fighter-type canopy, while the second crew member, the navigator,