Photos: Atlas 5 rolls out for Friday launch to GPS constellation

United Launch Alliance teams at Cape Canaveral hoisted a Centaur upper stage on top of an Atlas 5 rocket Friday at launch pad 41, completing the initial build-up of the launch vehicle slated to carry Boeing’s Starliner crew capsule into space in December on an unpiloted test flight to the International Space Station.

The last of NASA’s current-generation tracking and data relay satellites designed to link mission control with the International Space Station has been assigned for launch on a United Launch Alliance Atlas 5 rocket in October 2017, officials announced Friday.

An early bird rocket launch from the Florida spaceport will take to the skies before dawn Saturday when an Atlas 5 lofts a classified U.S. government satellite.