Couldn't that be becausethe coaches know the athletes and their routines quite well and can tell when something is wrong much quicker than a "regular" lifeguard?
I also have multiple pairs for different uses. Not airpods, but normal Bluetooth earbuds.
Mostly because I got cheap ones and somehow one side always stops working and I need to have a working pair for the gym.
Ja aber... das ist doch nicht korrekt! Extra still musste ja Unterdruck in der Flasche haben.