Space Men
In the 1950s and early '60s, a small band of high-altitude pioneers exposed themselves to the extreme forces of the space age long before NASA's acclaimed Mercury 7 would make headlines. Though largely forgotten today, balloonists were the first to venture into the frozen near-vacuum on the edge of our world, exploring the very limits of human physiology and human ingenuity in this lethal realm.
| Actor | Role |
|---|---|
 Michael MurphyNarrator | Narrator |
| BBurkhard BilgerSelf | Self |
 Scott CarpenterSelf (archive footage) | Self (archive footage) |
| FFrancis FrenchSelf | Self |
 John GlennSelf (archive footage) | Self (archive footage) |
| CCooper GordonSelf | Self |
 Gus GrissomSelf (archive footage) | Self (archive footage) |
| WWally SchirraSelf (archive footage) | Self (archive footage) |
| AAlan ShepardSelf (archive footage) | Self (archive footage) |
| JJohn Paul StappSelf (archival footage) | Self (archival footage) |
| DDana KilanowskiSelf | Self |
| DDavid SimonsSelf (archive footage) | Self (archive footage) |