NASA Kennedy Space Center Assistant Launch Director Pete Nickolenko monitors the countdown to the launch of the space shuttle Endeavour (STS-134) from Firing Room Four of the Launch Control Center (LCC), Monday May 16, 2011, at the Kennedy Space Center in Cape Canaveral, Fla. During the mission, Endeavour and the STS-134 crew will deliver the Alpha Magnetic Spectrometer (AMS) and spare parts including two S-band communications antennas, a high-pressure gas tank and additional spare parts for Dextre. Photo Credit: (NASA/Bill Ingalls)