STS-122 Mission specialist MS Rex Walheim, wearing red stripes and anchored to the Articulating Portable Foot Restraint APFR, and MS and European Space Agency ESA astronaut Hans Schlegel, wearing white stripes, work to replace a Nitrogen Tank Assembly NTA on the P1 Truss during the second session of Extravehicular Activity EVA 2. Photo was taken during Expedition 16/STS-122 joint operations.
