The rivalry between American astronauts and Soviet cosmonauts intensifies as last-minute changes impact the Pathfinder mission plan.

Alexander Sokovikov, Alim Kouliev, Andre Boyer, Charlie Schlatter, Connor Tillman, Daniel David Stewart, Dustin Seavey, Ellen Wroe, Eugene Alper, Goran Ivanovski, Jinny Chung, Joe Sobalo Jr., John Marshall Jones, Josh Duvendeck, Juliet Brett, Kayla Blake, Lauren Sweetser, Lenny Jacobson, Leonora Pitts, Linda Park, Meghan Leathers, Michael Benz, Michaela Conlin, Nate Corddry, Noah Harpster, Piotr Adamczyk, Scott Michael Campbell, Tim Jo, Timothy Ware-Hill