Robert Satcher Jr. completed installing thermal covers at the mobile base system. It appears something small and unidentified might have floated away from his work area. The crew and Mission Control are taking an inventory to help determine its identity.
Satcher now is moving to the Starboard 1/Starboard 3 truss segment to install fluid jumpers, while Randy Bresnik continues the same task on the Port 1/Port 3 truss segment.
Spacewalk elapsed time is four hours, 40 minutes.