1. Someone climbs to your location from the ground, or descends from the top of the route, hauling a sufficient amount of gear for you to rappel or be lowered to the ground. Obviously impractical on massive routes like El Cap.
2. A rescuer is slung onto the route near the incapacitated climber's location using a helicopter long-line. They prepare the climber for extraction and then they are both slung off by the helicopter at one time.
https://en.wikipedia.org/wiki/Helicopter_Flight_Rescue_Syste...