The Rotating Service Structure is rolled back from Space Shuttle Columbia in preparation for launch on mission STS-109.

The Rotating Service Structure is rolled back from Space Shuttle Columbia in preparation for launch Feb. 28, 2002, at 6:48 a.m. EST (11:48 GMT) on mission STS-109. Flags of the U.S. and the orbiter (foreground) illustrate the brisk winds blowing at Launch Complex 39A. In the photo is seen the Orbiter Access Arm stretched to Columbia's cockpit. A Hubble Servicing Mission, the goal of STS-109 is to replace Solar Array 2 with Solar Array 3, replace the Power Control Unit, remove the Faint Object Camera and install the ACS, install the Near Infrared Camera and Multi-Object Spectrometer (NICMOS) Cooling System, and install New Outer Blanket Layer insulation.