N173PA, has been fitted with an Airborne Biomedical Containment System (ABCS), funded by the US Center for Disease Control and Prevention (CDC). It has been used for transporting of patients suffering from the deadly Ebola outbreak in West Africa in 2014. This is the only aircraft in the world capable of safely transporting patients of highly communicable diseases that offers a high degree of protection to the aircraft's crew and the accompanying medical staff. This aircraft is currently under an On 'demand' US$5 million contract to the US State Department. As the virus spread, officials from the World Health Organization, U.N. and Britain, among others, all approached Phoenix Air to sign exclusive deals.