Three workers, with life vests and hard hats, on a boat hanging from cables over water.
Three lifeguards are haning from the boar, trying to save the dog from drowning.
Lifeguards are not the only profession that works near water.
Wearing life vests and hard hats does not mean the workers are lifeguards
Lifeguards don't tend to wear hard hats, therefore the workers were probably not saving a dog from drowning.