Inside NASA Kennedy Space Center's Orbiter Processing Facility Bay 1 workers move around the reaction control system.

Inside NASA Kennedy Space Center’s Orbiter Processing Facility Bay 1, workers move the sling into place around the forward reaction control system that will be installed on Atlantis. When ready, the shuttle equipment will be lifted for installation. The forward reaction control system is located in the forward fuselage nose area. During ascent of the space shuttle, it provides the thrust for attitude (rotational) maneuvers (pitch, yaw and roll) and for small velocity changes along the orbiter axis (translation maneuvers).