no no no, Halliburton is a infastructure company the mercs are Kelloge brown and root who is under Halliburton. but please understand that KBR is not a true "shooter" company but more for security. The really good Mercs are Blackwater I have a friend who works for them. He was one High speed dude. former airforce special forces guy. He was involved in operations in Iran during the hostage crises and Turkey and has told me some great stories.
but anyway.....YES the security contractor companys do not release some information. It is also not the DoD who releases info but the company itself.....cheers ute.