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KENNEDY SPACE CENTER, FLA. -- The STS-118 crew enjoys a traditional meal before suiting up for launch. Seated left to right are Mission Specialists Alvin Drew and Dave Williams, Pilot Charlie Hobaugh, Commander Scott Kelly, and Mission Specialists Tracy Caldwell, Rick Mastracchio and Barbara R. Morgan, the teacher-turned-astronaut. Space Shuttle Endeavour's STS-118 mission is the 22nd shuttle flight to the International Space Station. It will continue space station construction by delivering a third starboard truss segment, S5, and other payloads such as the SPACEHAB module and the external stowage platform 3. The 11-day mission may be extended to as many as 14 depending on the test of the Station-to-Shuttle Power Transfer System that will allow the docked shuttle to draw electrical power from the station and extend its visits to the orbiting lab. NASA/Kim Shiflett