President Barack Obama, First Lady Michelle Obama, daughters Malia, left, Sasha, and Astronaut Janet Kavandi walk under the landing gear from beneath the nose of space shuttle Atlantis as they visit Kennedy Space Center in Cape Canaveral, Fla., Friday, April 29, 2011. Photo Credit: (NASA/Bill Ingalls)

President Barack Obama, First Lady Michelle Obama, daughters Malia, left, Sasha, and Astronaut Janet Kavandi walk under the landing gear from beneath the nose of space shuttle Atlantis as they visit Kennedy Space Center in Cape Canaveral, Fla., Friday, April 29, 2011. Photo Credit: (NASA/Bill Ingalls)

Terry White, United Space Alliance project lead for thermal protection systems, left, sakes hands with President Barack Obama after showing his family, Sasha, First Lady Michelle Obama, Malia, and Marian Robinson, how tiles work on the space shuttle during their visit to the Orbital Processing Facility at the NASA Kennedy Space Center in Cape Canaveral, Fla., Friday, April 29, 2011. Photo Credit: (NASA/Bill Ingalls)

President Barack Obama, daughters Malia, left, Sasha, and Astronaut Janet Kavandi walk under the landing gear from beneath the nose of space shuttle Atlantis as they visit Kennedy Space Center in Cape Canaveral, Fla., Friday, April 29, 2011. Photo Credit: (NASA/Bill Ingalls)

Terry White, United Space Alliance project lead for thermal protection systems, left, shows President Barack Obama and his family, from left, First Lady Michelle Obama, Malia, Marian Robinson and Sasha, how tiles work on the space shuttle during their visit to the Orbital Processing Facility at the NASA Kennedy Space Center in Cape Canaveral, Fla., Friday, April 29, 2011. Looking on is Director of Flight Crew Operations for the Johnson Space Center and Astronaut, Janet Kavandi. Photo Credit: (NASA/Bill Ingalls)

Terry White, United Space Alliance project lead for thermal protection systems, left, shows President Barack Obama and his family, from left, First Lady Michelle Obama, Malia, Marian Robinson and Sasha, how tiles work on the space shuttle during their visit to the Orbital Processing Facility at the NASA Kennedy Space Center in Cape Canaveral, Fla., Friday, April 29, 2011. Photo Credit: (NASA/Bill Ingalls)

Terry White, United Space Alliance project lead for thermal protection systems, left, shows President Barack Obama and his family, from left, First Lady Michelle Obama, Malia, Marian Robinson and Sasha, how tiles work on the space shuttle during their visit to the Orbital Processing Facility at the NASA Kennedy Space Center in Cape Canaveral, Fla., Friday, April 29, 2011. Photo Credit: (NASA/Bill Ingalls)

President Barack Obama, First Lady Michelle Obama, daughters Malia, Sasha, and the First Lady's mother Marian Robinson, are shown the space shuttle Atlantis during a tour of the Orbital Processing Facility by NASA Astronaut Janet Kavandi during their visit to the Kennedy Space Center in Cape Canaveral, Fla., Friday, April 29, 2011. Photo Credit: (NASA/Bill Ingalls)

President Barack Obama, First Lady Michelle Obama, daughters Malia, left, Sasha, Marian Robinson, Astronaut Janet Kavandi and United Space Alliance project lead for thermal protection systems Terry White, walk under the landing gear of the space shuttle Atlantis as they visit Kennedy Space Center in Cape Canaveral, Fla., Friday, April 29, 2011. Photo Credit: (NASA/Bill Ingalls)

President Barack Obama holds hands with his daughter Malia as they walk under the space shuttle Atlantis with First Lady Michelle Obama, Sasha, and Marian Robinson during a tour they received of the NASA Orbital Processing Facility given by Astronaut, Janet Kavandi, and United Space Alliance project lead for thermal protection systems Terry White, right, at the NASA Kennedy Space Center in Cape Canaveral, Fla., Friday, April 29, 2011. Photo Credit: (NASA/Bill Ingalls)

CAPE CANAVERAL, Fla. – (201104290015HQ) Terry White, United Space Alliance project lead for thermal protection systems, left, shows President Barack Obama and his family, from left, First Lady Michelle Obama, Malia, Marian Robinson and Sasha, how tiles work on the space shuttle during their visit to the Orbital Processing Facility at the NASA Kennedy Space Center in Florida.