NASA Social participants attend a "What's on Board" science briefing at the agency's Kennedy Space Center in Florida. Joe Fust, mission integrator for United Launch Alliance, gives an overview of the Atlas V rocket that will launch the Orbital ATK Cygnus pressurized cargo module to the International Space Station. The briefing is for Orbital ATK's seventh commercial resupply services mission, CRS-7, to the space station. Orbital ATK's Cygnus module is set to launch on the United Launch Alliance Atlas V rocket from Space Launch Complex 41 at Cape Canaveral Air Force Station on April 18. Liftoff is scheduled for 11:11 a.m. EDT.