Canadian Forces diving is performed by units of the maritime, land, and air environmental commands (ECs), the Experimental Diving and Undersea Group (EDU Grp), and Special Operations Forces (SOF). Divers can be trained as Clearance Divers (CL Diver), Search and Rescue Technicians (SAR), Port Inspection Divers (PID), Ship's Team Divers, and Combat Divers.