(From left) Ellison Onizuka, Barbara Morgan (Teacher in Space alternate), Dick Scobee, Christa McAuliffe, Judy Resnik, Michael Smith, and Ron McNair.

Inside a training cockpit. (From left) Michael Smith, Ellison Onizuka, Judy Resnik, and Dick Scobee.

Ron McNair and Michael Smith.

Christa McAuliffe trains inside a Space Shuttle mock-up at Johnson Space Center.

Dick Scobee, STS-51-L Commander.

(From left) Barbara Morgan, Christa McAuliffe, Greg Jarvis, and Ron McNair on board a Space Shuttle mock-up.

(From left) Michael Smith, Barbara Morgan, Christa McAuliffe, and Dick Scobee.

Michael Smith, STS-51-L Pilot.

(From left) Ellison Onizuka, Ron McNair, Greg Jarvis, Judy Resnik, Christa McAuliffe, and Barbara Morgan.