Former Concord High School student Kelly Garfield, who had Christa McAuliffe as a homeroom teacher, stands Friday, Jan. 28, 2011, in Concord, N.H., at her gravesite at 11:38, 25-years after the shuttle Challenger exploded, killing McAuliffe and the rest of the crew. (AP Photo/Jim Cole)
** FILE ** This 1986 file photo provided by NASA shows the crew of the space shuttle Challenger. From left are Ellison Onizuka, Mike Smith, Christa McAuliffe, Dick Scobee, Greg Jarvis, Ron McNair and Judith Resnik. (AP Photo/NASA)
FILE - This 1986 file photo provided by NASA shows the crew of the space shuttle Challenger. From left are Ellison Onizuka, Mike Smith, Christa McAuliffe, Dick Scobee, Greg Jarvis, Ron McNair and Judith Resnik. (AP Photo/NASA)
