As of February 2019, the US Dept of Homeland Security (DHS), Customs and Border Protection (CBP), Air and Marine Operations (AMO) has currently 16 UH-60M Black Hawks, (among over 260 other aircraft asets of 26 different types.) The US Customs Service Aviation, at the time under the US Treasury Dept, had been using different aicraft, both fixed wing and rotorcraft, since 1922. The UH-60 Blackhawk helicopter fleet program began in US Customs Service Aviaiton in 1986, initially with the transfer of 16 UH-60A variant models from the US Army.. Then, when the DHS was formed in 2003, US Customs Service was abolished and all its aircraft and its pilot/agents were transferred entirely from the US Treasury Dept into the new Dept of Homeland Security, Customs and Border Protection. Air and Marine Operations. Over the years the old UH-60A models were replaced with the UH-60M variant and they all got the characteristic black with gold stripe paint job.