Earths horizon provides a backdrop for this view of Expedition 15 Flight Engineer FE-2, Clayton Anderson, working to prepare the Crew and Equipment Tanslation Aid CETA Carts 1 and 2 for relocation from the P1 truss to the S1 truss. Photo taken during the third session of Extravehicular Activity EVA 3 for STS-118 / Expedition 15 joint operations.