Anchored to the International Space Station's Canadarm2 foot restraint, astronauts Robert L. Curbeam Jr. (top) and Christer Fuglesang (center) work on the port overhead solar array wing of the station's P6 truss during the mission's fourth spacewalk.
Anchored to the International Space Station’s Canadarm2 foot restraint, astronauts Robert L. Curbeam Jr. (top) and Christer Fuglesang (center) work on the port overhead solar array wing of the station’s P6 truss during the STS-116 mission’s fourth spacewalk.Image credit: NASA