What should be checked first during a rescue operation when handling a fallen climber?

Checking on the fallen climber's condition first is crucial in a rescue operation. This immediate assessment ensures that the rescuer can determine the level of the climber's injuries and their overall health status. It allows for a rapid evaluation of whether the climber is conscious, breathing, and responsive, which are critical factors in deciding the next steps in the rescue procedure. By prioritizing the climber's well-being, rescuers can make informed decisions about how to proceed, including the need for medical intervention or additional support.

This approach not only enhances the chance of a successful rescue but also ensures that any life-threatening situations are addressed as quickly as possible. While checking knots, team readiness, and environmental conditions is important in a comprehensive rescue plan, the health and safety of the subject requiring rescue should take precedence.