NASA Associate Administrator for Space Operations Bill Gerstenmaier, center, reacts to an updated weather report during the countdown of the launch of the space shuttle Endeavour and the start of the STS-130 mission at NASA Kennedy Space Center in Cape Canaveral, Fla. on Sunday Feb. 7, 2010. Space shuttle Endeavour's launch attempt was scrubbed due to a low cloud ceiling over Kennedy Space Center. Photo Credit: (NASA/Bill Ingalls)