THIS PROPOSED STUDY AIMS TO IMPROVE OUR UNDERSTANDING ABOUT THE BEHAVIOR OF THE ENERGETIC ELECTRONS IN THE EARTH'S RADIATION BELT FOCUSING THE PRECIPITATION OF THE ENERGETIC ELECTRONS INTO THE EARTH'S ATMOSPHERE. WE WILL COMBINE MEASUREMENTS FROM MULTIPLE MISSIONS INCLUDING CSSWE BARREL POES AND VAN ALLEN PROBES AND CONDUCT SIMULATIONS WHICH TRACE THE MOTION OF THE ELECTRONS TO QUANTIFY THE PRECIPITATION LOSS OF THE ENERGETIC ELECTRONS WHICH HENCE HELPS THE UNDERSTANDING OF THE SOURCE AND ACCELERATION PROCESS OF THE ENERGETIC ELECTRONS. THIS PROPOSED STUDY SUPPORTS THE NASA'S VAN ALLEN PROBES MISSION.