your legs forward. this is probably the number one rescue device that we use most offn to save people. this is called a throw bag. reporter: inside 65 feet of rope. i played the victim and the bag and rope is thrown. it s a complete pass. these currents are very dangerous. you get tide up round rocks, branchs and at the bottom of the water and you tread for a while, you tire very quickly and then you be in a lot of trouble. that s why ivan in good weather, it s important to stay away from bodies of water like this with currents. frank will get out here on this perch. you ready? reporter: i m the victim. there will be two rescuers and it s called the live bait
in and then get out here on this perch. are we ready? i m the victim. there will be two rescuers. and it is called a live bait technique. captain horton is tethered to a rope being held on shore by another firefighter. he is swimming out to get me before i head over the next waterfall. the rescue and today s lesson both successful. we re trying to get the victim out of there but we can t allow them to kill our rescue. so we have to go in there with the knowledge and with the training and with the experience so that everybody goes home at the end of the day. and i remember one of the things he was saying last night, if you don t have the gear firefighters go into the water and with the firefighter helmet if it gets under the current it can break somebody s neck if the water is moving fast enough. the water looks rough even after the river is receding how do