BWRAF - R = Releases. Your checking your buddies releases to make sure you know where they are, how they function, that they are fastened and how to get him/her out of their equipment if needed, this includes weights be it integrated or belts (my shop uses integrated but I have a weight belt that I show them). If someone didn't do this either they didn't get the basic OW training or the panic wouldn't let them think of it or it was a physical problem. This isn't extra stuff this is what is suppose to be taught in buddy check in basic open water, along with some other basic rescue skills taught in the PADI system in Open Water certs.