File:STS-118 crewmembers exit the Operations and Checkout Building.jpg

English: STS118-S-005 (8 Aug. 2007) --- After suiting up, the STS-118 crewmembers exit the Operations and Checkout Building to board the Astrovan, which will take them to launch pad 39A at Kennedy Space Center. On the right (front to back) are astronauts Scott Kelly, commander; Tracy Caldwell, Canadian Space Agency's Dave Williams, and Alvin Drew, all mission specialists. On the left (front to back) are astronauts Charlie Hobaugh, pilot; Rick Mastracchio and Barbara R. Morgan, both mission specialists. Endeavour will link up with the International Space Station on Friday, Aug. 10, to begin a joint mission to continue 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 orbital complex.