In the event of a missing swimmer, what is the first step a lifeguard should take?

When dealing with a situation involving a missing swimmer, the first step a lifeguard should take is to conduct an immediate search. This action is vital because time is of the essence in water emergencies; the sooner a search begins, the better the chances of locating the swimmer safely.

Starting the search quickly enables lifeguards to assess the situation firsthand, determine the last known position of the swimmer, and begin looking for them in the water and surrounding areas. Immediate action can also help to prevent panic and ensure that proper protocols are followed, which may include notifying additional staff or calling emergency services if needed.

While other actions—such as notifying the swimmer’s family or contacting the media—may be relevant as the situation progresses, they should not delay the initial search. Checking the pool schedule can also provide context about the swimmer's presence but does not contribute to the immediate need to locate them. The priority must always be on finding the missing swimmer as quickly as possible to maximize their safety and well-being.