Survivor: Panama
Immunity Challenge: One person is seated in a chair attached to a pulley, while another person is directly above them in a crow's nest, where an empty water drum hangs. The other four tribe members are together in pairs, which will race across a balance beam carrying buckets. Once they reach the water, they must dip their bucket in, get water, race back and empty the water into a bigger pail. The person in the crow's nest will pull that pail up and empty the water into the drum. As the drum takes on water, it will lower, but the person in the chair will rise until they're high enough to pull a pin raising their tribe's flag. First tribe to raise their flag wins Immunity.