5 May -- On This Day [multiple clips]

Video and audio from the BBC news archive, WWII and 1950-2004 include 1980: SAS rescue ends Iran embassy siege; 1981: Bobby Sands dies in prison; 1961: Shepard becomes first US astronaut; 2005: Blair secures historic third term; 2001: Sun shines on foot-and-mouth crisis; 1955: Dr Salk promotes polio vaccine in UK; 1967: First all-British satellite 'Ariel 3' launched.