NASA Atlas V Rocket and TDRS-M

As the Sun rises at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, a United Launch Alliance Atlas V rocket vents liquid oxygen propellant vapors during fueling for the lift off of NASA's Tracking and Data Relay Satellite, TDRS-M. via NASA http://www.nasa.gov/image-feature/atlas-v-rocket-and-tdrs-m