Photos: Atlas 5 rolls out for launch

The U.S. Air Force’s next GPS navigation satellite has been closed up inside the payload fairing of its Delta 4 launcher ahead a liftoff from Cape Canaveral scheduled for July 25.

This is the ascent timeline to be followed by the United Launch Alliance Atlas 5 rocket in launching NASA’s MMS mission on March 12 at 10:44 p.m. EDT.

The 8-million-pound mobile service tower is retracted from around the Atlas 5 rocket, revealing the 189-foot-tall vehicle for liftoff from Vandenberg Air Force Base, California, carrying the commercial WorldView 4 Earth-imaging satellite.