Pathfinders provide navigational aid and advisory services to military aircraft in areas designated by supported unit commanders. The Pathfinders' secondary missions include providing advice and limited aid to units planning air assault or airdrop operations. During the Pathfinder course students are instructed in aircraft orientation, aero-medical evacuation, close combat assault, ground to air communication procedures, Control Center operations, all three phases of a sling load operation, Helicopter Landing Zone and Pick Up Zone operations, and Drop Zone operations (Computed Air Release Point, Ground Marker Release System, and Verbally Initiated Release System), Pathfinders also deal with U.S. military fixed and rotary wing aircraft for personnel and equipment.