NASA Administrator Charles Bolden, seated left, takes off from the Shuttle Landing Facility (SLF) in a helicopter that will escort the crew of the space shuttle Discovery (STS-133) to launch pad 39a at the Kennedy Space Center, Thursday, Feb. 24, 2011, in Cape Canaveral, Fla. Discovery, on its 39th and final flight, is carrying the Italian-built Permanent Multipurpose Module (PMM), Express Logistics Carrier 4 (ELC4) and Robonaut 2, the first humanoid robot in space to the International Space Station. Photo Credit: (NASA/Bill Ingalls)
