[Business & Human Rights Resource Centre invited Askar Security, Delta Protection & G4S to respond. Responses provided] The report found that the UN did not have system-wide standards to hire PMSCs and had never conducted a policy review of the impact of its use of PMSCs. The report recommends that...the UN should... devise and implement a strong vetting system for PMSCs as well as guidelines defining which services the companies should perform and how oversight and accountability are to be managed...G4S has been making headlines for poor performance and abuses, but the UN still uses this company in many locations...The UN...has become involved with...Askar Security...[which] has been involved with the exploitation of Ugandans sent to work on security contracts in Iraq....The UN peacekeeping mission to the DRC...has been using...Delta Protection...[G]uards from Delta Protection...were responsible for beating and killing a man [refers to Hart, DynCorp, Pacific Architects and Engineers, Northrop Grummon, MPRI, Blackwater, Saladin]