Houston, Texas - NASA headquarters - aftermath of Space shuttle Columbia tradgedy. IN THIS PHOTO: Christopher McNally, 5 and one of his triplet brothers Patrick McNally, 5 both of Houston, wear astronaut suits as theyh play in a mock-up of a shuttle co

Houston, Texas - NASA headquarters - aftermath of Space shuttle Columbia tradgedy. IN THIS PHOTO: Christopher McNally, 5 and one of his triplet brothers Patrick McNally, 5 both of Houston, wear astronaut suits as theyh play in a mock-up of a shuttle cockpit area on display at the Space Center museum in Houston. Christopher can recite the names of many space ships and astronauts that have flown in the space program.(Photo By MARLIN LEVISON/Star Tribune via Getty Images)