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. written on the back of the stone is the text of the john gillespie magee, jr. poem "high flight". 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 of the crew members, scobee and smith, are buried in arlington, as well. there is a similar memorial to those who died when the shuttle "columbia" broke apart during reentry on february 1, 2003. it was dedicated on the first anniversary of the disaster. astronauts laurel clark, david brown and michael anderson are also buried in arlington.