A former British soldier [Danny Fitzsimons] who claims to be suffering from post-traumatic stress disorder has been jailed for 20 years in Iraq for the murder of two fellow security contractors...colleagues at the UK security firm ArmorGroup, now part of G4S, and injured an Iraqi security guard 36 hours after arriving in Iraq in 2009....Fitzsimons's [relatives]...called for legislation to help vet those hired by private security firms.