Video: NROL-37 payload and Delta 4-Heavy rocket prepped for launch

The United Launch Alliance Atlas 5 rocket, standing 194 feet tall and and weighing a million pounds, unleashes two million pounds of thrust from its main engine and three solid-fuel boosters today to launch the EchoStar 19 commercial Internet broadcast satellite from Cape Canaveral, Florida.

A United Launch Alliance Atlas 5 rocket launched from Cape Canaveral with a classified payload for the National Reconnaissance Office at 5:32 p.m. EST (2232 GMT) Friday. The launcher debuted new Northrop Grumman-built solid rocket boosters.

The United Launch Alliance Atlas 5 rocket with the Air Force’s X-37B spaceplane lifts off at 11:05 a.m. EDT from Complex 41 at Cape Canaveral Air Force Station in Florida.