Three guards who worked for the security firm G4S have been told they will not face manslaughter charges over the death of Jimmy Mubenga, an Angolan refugee who collapsed while being escorted on a flight from Heathrow airport in London 21 months ago. The men worked as guards for the firm, which was contracted to escort deportees for the Home Office when the incident occurred. Mubenga, 46, died after losing consciousness on British Airways flight 77 to Angola, as it waited to take off on the runway.