We refer to those people as skittles. They all have brightly colored gear like the rainbow and rain down from the sky like in skittles commercialsJust be sure to watch out for idiots with no situation awareness that do an uncontrolled descent through the middle of a class, swim under the platform to make sure that everything is good and silted out, and then park themselves on the line the class is trying to use for CESAs.
Would be super annoying if you ran into someone like that in your rebreather class.