 So, today the recruits were participating in a basic swim call. So what that entails is starting off with a 25 meter shallow water assessment. So the 25 meter shallow water assessment is for us to get eyes on who can swim 25 meters without any assistance utilizing any of the six authorized strokes. Once we get that information, then we take it and for the ones that don't pass, we go ahead and work with them for the rest of the week. After that we go over to the tower, we do a 25 meter conduct self rescue and then we get them to tread the water for four minutes. After that we go into a shallow water gear shed and then an employee flotation device. So the purpose of swim call for the recruits is that once they become that marine, they're already going to know those four basic strokes. Some of the things that the recruits struggle with the most would be the four minute trinal surface. So we're getting recruits from all over the world. More than likely they have never treaded water for four minutes at a time so that event is new to the recruits. After that they're learning confidence in the water itself, learning how to tread and also they're learning how to utilize their gear.