Video: Halloween liftoff of Atlas 5 with GPS 2F-11

The United Launch Alliance Atlas 5 rocket, standing 191 feet tall and and weighing 720,000 pounds, unleashes 860,000 pounds of thrust from its main engine at 9:49:51 a.m. local time today to launch the secret NROL-79 payload for the U.S. National Reconnaissance Office from Vandenberg Air Force Base, California.

The U.S. Government Accountability Office has denied a protest filed by Sierra Nevada Corp. challenging NASA’s selection of competitors Boeing and SpaceX to build commercial human-rated space capsules to fly astronauts to the International Space Station.

Iran’s second try in less than a month to send a satellite into orbit apparently failed shortly after liftoff from a remote desert launch pad under daily surveillance from a fleet of commercial imaging spacecraft, according to U.S. government officials and independent analysts.