Arlington National Cemetery
The Space Shuttle "Challenger" Memorial was dedicated on May 20, 1986, in memory of the crew of flight STS-51-L, who died during launch on January 28, 1986. Transcribed on the back of the stone is the text of the John Gillespie Magee, Jr. poem "High Flight", which was quoted by then President Ronald Reagan when he addressed the disaster. Although many remains were identified and returned to the families for private burial, some were not, and were laid to rest under the marker. Two crew members, Scobee and Smith, are buried in Arlington. On February 1, 2004, NASA Administrator Sean O'Keefe dedicated a similar memorial to those who died when the Shuttle "Columbia" broke apart during reentry on February 1, 2003. Astronauts Laurel Clark, David Brown and Michael Anderson, who were killed in the "Columbia" disaster, are also buried in Arlington.
Terahertz nondestructive evaluation
STS-114 employed Space Shuttle "Discovery", and was the first "Return to Flight" Space Shuttle mission following the Space Shuttle "Columbia" disaster. It launched at 10:39 EDT, 26 July 2005. During the STS-114 flight significant foam shedding was observed. Therefore, the ability to nondestructively detect and characterize crushed foam after that flight became a significant priority when it was believed that the staff processing the tank had crushed foam by walking on it or from hail damage when the shuttle was on the launch pad or during other preparations for launch.