STS-121 EV1 Piers Sellers translates along the S1 Truss carrying the fixed grapple bar that is to be installed on an ammonia tank inside the truss. Earth limb in background. Image taken during Extravehicular Activity 3 EVA3 on STS-121 / Expedition 13 joint operations.
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STS-121 EV1 Piers Sellers translates along the S1 Truss carrying the fixed grapple bar that is to be installed on an ammonia tank inside the truss. Earth limb in background. Image taken during Extravehicular Activity 3 EVA3 on STS-121 / Expedition 13 joint operations.
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