Members of an ISS Research and Technology Panel media representatives in Kennedy Space Center's Press Site auditorium in preparation.

Members of an ISS Research and Technology Panel brief media representatives in Kennedy Space Center’s Press Site auditorium in preparation for the launch of the SpaceX CRS-4 mission to resupply the International Space Station. From left are Duane Ratliff, chief operating officer, CASIS, Mike Yagley, COBRA PUMA Golf, director of Research and Testing, Dr. Eugene Boland, Techshot chief scientist, Jason Gilbert, scientific associate, Novartis Institutes for BioMedical Research, and Niki Werkheiser, 3D Printing in Zero-G project manager.

The mission is the fourth of 12 SpaceX flights NASA contracted with the company to resupply the space station. It will be the fifth trip by a Dragon spacecraft to the orbiting laboratory. The spacecraft’s 2.5 tons of supplies, science experiments, and technology demonstrations include critical materials to support 255 science and research investigations that will occur during the station's Expeditions 41 and 42. Liftoff is targeted for an instantaneous window at 2:14 a.m. EDT. To learn more about the mission, visit http://www.nasa.gov/mission_pages/station/structure/launch/index.html. Photo credit: NASA/Jim Grossmann