The Hyperspectral Imager for the Coastal Ocean (HICO) and Remote Atmospheric and Ionospheric Detection System (RAIDS) Experiment Payload (HREP) launched September 10, 2009, on-board the Japanese Aerospace Exploration Agency (JAXA) H-II Transfer Vehicle (HTV). The HTV is an unmanned spacecraft developed by JAXA to deliver cargo and external payloads to the International Space Station. The two science instruments, HICO and RAIDS, are mounted inside the HREP enclosure along with the HREP avionics for communication, instrument control and data storage, and a star camera to provide precise attitude determination. Following a fast-paced 24 month design and development process, HREP is providing the first-ever high quality and real-time monitoring of space weather and coastal ocean environment directly from the new Japanese Experiment Module-Exposed Facility (JEM-EF) on the International Space Station (ISS).The HTV-1 flight was also the maiden launch of JAXA's new H-IIB rocket, making the HTV-1 mission a double-first of the new launch vehicle and new free-flying transfer vehicle. Development of the first NASA payload to be launched via HTV presented many challenges to the development team. A summary of the HREP mission concept and execution will be presented along with the exciting capabilities and opportunities for payloads to fly on the HTV and operate on the JEM-EF.