Canadian Armed Forces (CAF) divers are specialists trained to conduct underwater operations within their respective environmental commands. Divers within the CAF are qualified into sub-categories of diving. Be it a member of a diving team or a CAF member who is maintaining currency and qualification through casual diving. Divers within the CAF are trained as Clearance Divers (CL Diver), Search and Rescue Technicians (SAR), Port Inspection Divers (PID), Ship's Team Divers, and Combat Divers. Training The CAF training agencies authorized to conduct CAF diving training are: Fleet Diving Unit (Atlantic) (FDU (A)); Fleet Diving Unit (Pacific) (FDU (P)); and Army Dive Centre (ADC). Clearance divers Royal Canadian Navy Clearance Divers are trained to conduct a wide variety of diving operations. These include the use of traditional open circuit (SCUBA) diving equipment, lightweight portable surface supplied diving systems, commercial grade mixed gas surface supplied diving systems, mixed gas rebreather systems (such as the CCDA and CUMA sets) as well as fixed and portable hyperbaric chambers. Canada currently has two operational diving units; RCN Clearance Diving Officers, and Clearance Divers and Port Inspection Divers who perform a variety of core capabilities, as outlined in their Naval Diving Operational Concept of Employment (ND OCE) terms of reference. These core capabilities are: Battle Damage Repair (BDR) Maritime Explosive Ordnance Disposal (MEOD) Mine Counter-Measures (MCM) Force Protection Support (FPS) They also perform a number of secondary or support functions to these core capabilities include but are not limited to: Improvised Explosive Device Disposal (IEDD) for devices found in military establishments within defined areas of responsibility in Canada; Submarine Search and Rescue (SUBSAR) first line response (RCC and light-weight Surface Supplied Diving equipment) Second line response (ROVs and/or diving); Provision of a minimum six-person 45 metre CABA diving team on each coast for emergencies; Diving Support Roles (which amplifies Para 13 b.) consist of: Underwater ship and infrastructure maintenance Light salvage Seabed search Underwater demolitions Inspection, maintenance and repair of critical diver life support equipment Operation of Working Class Remote Operated Vehicle (ROV), Inspection Class ROV, ROV Simulator, Diver Evaluation Systems, and side scan sonar (SSS) Support for medical treatment in hyperbaric chamber Support to JTF2 Operating the Experimental Diving Unit (EDU) at DRDC Toronto in support of R&D efforts related to CF diving activities The two operational naval diving units are: Fleet Diving Unit Pacific based at CFB Esquimalt, British Columbia. Fleet Diving Unit Atlantic