The Final Spacewalk and a New Home for the Inspection Boom

2011-05-27 - NASA astronaut Mike Fincke traverses the S1 truss segment of the International Space Station during STS-134’s fourth and final spacewalk. Fincke and astronaut Greg Chamitoff (out of frame) secured the Inspection Boom (top left) to the Station where it will remain permanently. (Credit: NASA)