| JJeff WilburnSelf - Narrator (voice) | Self - Narrator (voice) |
| CCharles WalkerSelf - Payload Specialist, 1984-1985 | Self - Payload Specialist, 1984-1985 |
| SStephanie StilsonSelf - Discovery Flow Director, NASA | Self - Discovery Flow Director, NASA |
| VValerie NealSelf - Curator, National Air and Space Museum | Self - Curator, National Air and Space Museum |
| KKenneth S. Reightler Jr.Self - Astronaut, 1988-1994 | Self - Astronaut, 1988-1994 |
| FFrank CulbertsonSelf - Astronaut, 1985-2001 | Self - Astronaut, 1985-2001 |
| WWilliam F. ReaddySelf - Astronaut, 1987-1996 | Self - Astronaut, 1987-1996 |
| MMalcolm CollumSelf - Chief Conservator, National Air and Space Museum | Self - Chief Conservator, National Air and Space Museum |
 Kathryn ThorntonSelf - Astronaut, 1985-1995 | Self - Astronaut, 1985-1995 |
 Pamela Ann MelroySelf - Astronaut, 1995-2007 | Self - Astronaut, 1995-2007 |
| MMike ParrishSelf - Kennedy Space Center | Self - Kennedy Space Center |
| CCliff SemonskiSelf - Kennedy Space Center | Self - Kennedy Space Center |
| TTim KeyserSelf - Kennedy Space Center | Self - Kennedy Space Center |
| TTony SabatinoSelf - Kennedy Space Center | Self - Kennedy Space Center |
| RRay ZinkSelf - Kennedy Space Center | Self - Kennedy Space Center |
| CCarl E. WalzSelf - Astronaut, 1990-2002 | Self - Astronaut, 1990-2002 |
 Kathryn D. SullivanSelf - Astronaut, 1979-1992 | Self - Astronaut, 1979-1992 |
| RRich KowalczykSelf - Chief Preservation and Restoration Unit | Self - Chief Preservation and Restoration Unit |
| FFrederick GregorySelf - Astronaut, 1978-1991 | Self - Astronaut, 1978-1991 |
| JJohn GlennSelf - Astronaut, 1959-1962 & 1998 | Self - Astronaut, 1959-1962 & 1998 |
| EEileen CollinsSelf - Astronaut, 1991-2005 | Self - Astronaut, 1991-2005 |
| CCharles F. Bolden Jr.Self - NASA Administrator | Self - NASA Administrator |