Unit (RPU) covers the whole force from three bases. Those bases include Sussex Police HQ (Lewes), Arundel and Hastings. The primary aims of RPU are to deny criminals the use of the road, tackle anti-social driving such as mobile phone use and drink-driving and to bring down the number of KSI (killed and seriously injured) casualties on the roads of Sussex. Vehicles in use include fully marked and unmarked vehicles of various types fitted with covert warning equipment. Specialist Enforcement Unit (SEU) The SEU was formed on 26 January 2021 with the sole task of denying criminals the use of the roads, particularly car crime such as car theft and ‘county line’ drug smuggling between counties. It differs from the RPU as it targets these specific areas. Specialist Search Unit (SSU) This unit was disbanded in June 2015, due to cuts in the police budget. Prior to disbandment Specialist Search Unit officers searched where other police officers could not go. They were trained to search in demanding environments that needed specialist equipment, such as underwater (mostly inland waters), at height, in flooded areas as in the Lewes floods in 2000, and confined spaces. The team were experts in searching for missing people, stolen property, drugs, weapons and firearms, and they were also licensed to find and identify improvised explosive devices. A police boat was used by the unit to undertake marine patrols along the Sussex coastline and during diving operations. Tactical Firearms Unit (TFU) The Tactical Firearms Unit covers the entire force from two bases. Those bases include Sussex Police HQ (Lewes) and Gatwick. Firearms officers are deployed to incidents involving the use of firearms or other lethal weapons either on a spontaneous or pre-planned basis. They are able to be deployed across all of Sussex, dealing with high priority crime such as drugs, burglary and violent crime. All tactical firearms (TFU) officers are trained in conflict resolution methods, meaning every incident is resolved using the minimum amount of force necessary. Non-lethal methods used by officers include the Baton Gun for firing rubber bullets and the Taser stun-gun. Officers are rigorously trained in threat assessment and perception, ready to make split-second decisions to protect the public against threats of violence. Officers are required to complete a two-year probationary period as firearms officers at Gatwick Airport after completing initial training. Use of drones Sussex Police currently operates a number of different