- S2 Truss -
STS-226 delivered the second starboard truss segment to the IOSS. The S2 Truss (Starboard-2 Truss) will be used to hold external pallets, and serve as a link to the Starboard Radiator, which will be used to help control temperature on the station.
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| STS-226 on the pad at Cape Canaveral | Lift-off of Discovery | View of the tower passing by from the Commander's seat | SRB separation |
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| Sunrise shortly after SRB separation | STS-226 on orbit | Discovery beginning to dock with the IOSS | View of Discovery from the Cupola as Discovery docks |
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| Discovery docked with the station | S2 Truss being grappled by the Station Arm | S2 Truss being moved into position | S2 Truss installed |
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| STS-226 undocking from the station | Discovery buttoned-up | Discovery performing a de-orbit burn | Discovery approaching Cape Canaveral after circling |
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| Discovery turning final | Wheel stop | The IOSS at the end of the mission |