This one is particularly interesting in revealing the situational awareness of the lifeguards [0]. One jumps in from the left, then another when it looks like t

This one is particularly interesting in revealing the situational awareness of the lifeguards [0]. One jumps in from the left, then another when it looks like there could be more than one person that needs help. At the same time, the two other lifeguards on duty on the right side reposition themselves: one stays on the right, the other moves to the left side of the pool, and both begin stalking up & down the pool length to monitor the pool as their colleagues deal with their situation. It has the feel of a well-oiled machine to continue keeping the other swimmers safe even when overall monitoring capacity is reduced. A very good example of the need for-- and effective use of-- multiple redundancy layers in the realm of human safety. I feel compelled to keep watching these at random until I can pick out the person in crisis by the time the lifeguard jumps in. After reading the article I am terrified of not being vigilant enough when my kids go swimming. [0] https://www.youtube.com/watch?v=Xdu3Kq8bmxc https://www.youtube.com/watch?v=Xdu3Kq8bmxc