An Atlas 5 rocket rumbled into space Saturday evening after lifting off from Cape Canaveral with multiple U.S. Air Force communications and tech demo satellites, and brilliant clear skies made for ideal viewing conditions shortly before sunset.

A United Launch Atlas 5 rocket is set to launch the U.S. Air Force’s fifth Advanced Extremely High Frequency communications satellite from Cape Canaveral. This timeline shows the major mission events planned over a nearly six-hour flight to an optimized geostationary transfer orbit.

This is our comprehensive fact sheet previewing the United Launch Alliance Atlas 5 rocket deployment of the classified NROL-52 payload for the National Reconnaissance Office.