Why is it recommended that rescuers train regularly in swiftwater rescue techniques?

Regular training in swiftwater rescue techniques is crucial for maintaining and enhancing rescuers' skills. Swiftwater environments can be unpredictable, and conditions may vary greatly from one scenario to another. By engaging in consistent practice, rescuers are able to stay proficient in the specific skills and techniques necessary for effective and safe operations in fast-moving water. This ongoing training helps to build muscle memory, improve decision-making under stress, and ensure that rescuers are familiar with the latest equipment and methodologies.

The other options do not align with the fundamental goal of repeated training. Collecting data on river changes is important but not a primary reason for rescuers to train. Preparing only for non-swift water rescues doesn't address the unique challenges posed by swiftwater, and fulfilling licensing requirements may drive some training efforts but isn’t the main focus that emphasizes the need for frequent practice in swiftwater rescue techniques. Thus, the emphasis on regular training underscores the necessity for rescuers to remain ready for the dynamic and potentially dangerous conditions they might face in swiftwater scenarios.