Citadel Investigations & Security Ltd. is a private investigation agency based in Midland, TX. Our services include corporate and private due diligence inspections, unique and extreme vetting services, SIU investigative services, and law enforcement services. Our team of professional security personnel are highly trained and certified, with qualifications that include armed and unarmed security officers, special transportation and security training. Located at 6 Desta Dr, Ste. 2725, Midland, TX 79705, Citadel has 27 years of