Which steps in deep-water rescue apply only if the guest is unresponsive?

In a deep-water rescue situation where a guest is unresponsive, checking the airway and breathing are critical steps to determine the condition of the individual. If a person is facedown in the water and unresponsive, it is essential to ensure that their airway is clear, as they may be at risk of drowning due to an obstructed airway. This action helps to assess whether the person is breathing and allows lifeguards to take appropriate further action, such as performing rescue breaths or initiating CPR if necessary. Thus, this step is specifically tailored to situations involving unresponsive guests, highlighting the urgency of assessing their medical needs immediately upon rescue.